NBDE Part 1 Questions Version 1.0

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shuntyman

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1) which of the following directly catalyses urea formation in a cell?
a urease
b uricase
c arginase
d glutaminase

20 under physiologic conditions, the lowest partial pressure of oxygen is found in
a expired air
b alveolar air
c venous blood
d arterial blood
e normal atmosphere air

3) cushing syndrome is characterised by each of the following except one which one is the EXCEPTION?
a increased protein anabolism
b increased androgen levels
c hyperglycemia
d hypertension
e hyperkalemia


cushing syndrome causes both protein catabolism and hypokalemia

4) which of the following histologically describes oral mucosa on the floor of the mouth?
a non keratinised epithelium with lamina propria and sub mucosa
b nonkeratinised epithelium with lamina propria but no sub mucosa1.in the intercuspal position,the maxillary posterior teeth oppose
a.facial inclines of facial cusps
b.lingual inclines of facial cusps
c.facial inclines of lingual cusps
d.lingual inclines of lingual cusps

1.a,b.c
2.a,b,d
3.a,c
4.b,c
5.all the above

2.as the teeth are closed in intercuspal position ,the final movemant of the mandible is directed by the
1.height of the free way space
2.strength of the muscle sof mastication
3.cusp fossa relation ship of opposing teeth
4.ligaments that extend from ythe skull to mandible
5.shape of the articular eminnence of the temporo mandibular joint

3.at the same time as the supre hyoid muscles co nteact during swallowing ,a downward displacement of the mandible is prevented by the contraction of the
1.infre hyoid muscle
2.masticatory muscles
3.anterior cervical muscles
4.posterior cervical muscles
5.muscles of facial expression

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1 A dehydrated dental patient, as a result of severe vomiting following over use of a narcotic analgesic, might pesent with which of following symptoms?
a increased pulse rate. <-- SV goes down so HR goes up to compensate
b an increased blood pressure.
c facial edema
d distended neck veins
e desire to constantly urinate.

2 Destruction of left spinocerebellar tract at T2 wouold be expected to eliminate positional sense on the
a right side of the body above T2
b right side of the body below T2
c left side of the body above T2
d left side of body below T2 <-- spinocerebellar tract is for proprioception so it stays on the ipsilateral side throughout the spinal cord

3 which of the following circumstances produce edema?
a increased tissue oncotic pressure. <-- oncotic pressure draws fluid into the space, so tissue oncotic pressure would draw fluid into the tissue and thus out of the vasculature
b increased plasma oncotic pressue.
c increased tissue hydrostatic pressure.
d decreased plasma hydrostatic pressure.
decreased venous pessure.

4 Sodium permeability of an axon membrane is maximal during the
a negative after potential
b positive after potential
c ascending limb of action potential <-- I believe this is correct since this is where it passes threshold
d descending limb of action potential

5 The basic principles for sequencing DNA by Sanger procedure derive from which of the following
a translation
b transcription
c replication <-- from what I recall this technique uses replication to sequence DNA. They put in a bunch of bases and then a few of each base which can't be added on to. And because you can't add on to those bases, replication will stop at certain points and you'll get a bunch of different sized fragments. The bases that can't be added on to are labeled. Then you filter them out by size. Basically the smallest one comes out first which is going to be the one with only one base. Then the one with two bases comes out next. And so on. Since these 'dead bases' are labeled, you can sequence the DNA. The radioactive base in the 1 base fragment is the first base. The radioactive base in the 2 base fragment is the second base, etc.
d reverse transcripition



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1. in sagital plane diagram ,initial occlusal contact in retruded contacting position occurs
a]at more lateral position than intercusspal position
b]at same verticle position as i.c.p.
c]at more superior position than i.c.p
d]at more inferior position than i.c.p

2when a brief period of hysterical hyperventillation causes respiratory alkalosis ,tetany might be caused by sudden decrease in the following kind of calcium
a]total serum
b]ionized serum
c]citrate bound
d]serum protien bound

3enamel rods converge as they pass from dentinoenamel junction towards the surface in the area of
a]cervical line of perm teeth
b]cervical line of primary teeth
c] fissure


4.which of the following are located extracellularly
a]lysosomes
b]microtubules
c]tonofibrils
d]glycocalyx

5.secondary centtre of ossification is found in which of the following arrea
a]diaphysis
b]epiphysis
c]metaphysis
d]epiphysial plate
e]inner aspects of bone trabeculae within diaphysis


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IN the Rt laterotusive , F cusp of the max rt 1st M passes through which of the following groove of mand rt 1st molar .
1 Lingual
2 central
3 MF
4 DF
what i think is MF. what do u think am i right




Q the height of the lingual cusps of th mand 1st molar accomodate which of the following ---
1 centric relation
2 working movement
3 protusive position
4 non working movement
5 maximum intercuspation
with explanation please ---
thankyou



Working Movement, coz' they are guiding cusps and do not play a role in the other options.
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which of the following statements BEST describe GTP-binding
proteins(G-Proteins)?
a.are important components of steroid harmone signal transduction
b.catalize the reaction which produces diacylglycerol
c.are tightly bound to adenylate cyclase
d.usually inactive protein kinase C
e.are membrane proteins

Total urinary nitrogen excretion in LEAST when an individual is?
a.starving
b.on a well balanced diet
c.on a diet containing adequate fat and carbohydrate but no protein
d.on a diet containing adequate pretein but no fat or carbohydrate


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C



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each of following about lymphocyte activation correct except:

IL5 is a B cell growth and differentiation factor
IL2 stimulate proliferation of T and B cells
B cells recognize Ag on surface of Ag presenting cells in context of HLA-D
T cells recognize Ag on surface of Ag presenting cells in context of HLA-B

ans : B cell recognize Ag on surface of ag presenting cells in context of HLA-D
A critical difference between B cells and T cells is how each lymphocyte "sees" its antigen. B cells recognize their cognate antigen in its native form. They recognize free (soluble) antigen in the blood or lymph using their BCR or membrane bound-immunoglobulin. In contrast, T cells recognize their cognate antigen in a processed form, as a peptide fragment presented by an antigen presenting cell's MHC molecule to the T cell receptor.



types of inflammatory exudates exept:
fibrous
fibrinous
pseudomembranous


wich is a nucleotide:
urate
uracil
adenosine
thymidylate




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1. Each of the following factors affects heights of cusps and depths of fossae on restorations except:
a. curve of spee
b. intercondylar distance
c. vertical overlap of anterior teeth
d. horizontal overlap of anterior teeth
e. steepness of the articular eminence

2. In primary first molars, which portion of the crown is shorter occlusongigivally?
a. mesial
b. distal
c. midfacial
d. midlingual

3. How many triangular ridges, transverse ridges, and marginal ridges are in mandibular first molars?

Ans. 5, 1,2

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1]aspirated food into lungs all of the following can happen except which one?pneumonia,pneumothorax,lung abcess,etci think pneumothorax
2]jaw reflex-nerves located in semilunar______trigeminal ganglion
3]IgG is activated where?myoepith,striated,etc
4]what is not involved in translation?
5what is not involved in collagen synthesis?mitochondrion,snrp,etc
6]the structure and nomenclature of the nucleotide bases eg the nomenclature of atp when it is broken down.is it adenine ,adenosine,etc
7]how to make a cDNA library?
8]listeria causes dysentery,cholera ,fecal death,gastroenteritis
9]high intensity disinfectant??kill hepB,TB,ALLSPORES?
10]WHAT DOES NOT PREDISPOSE TO CERVICAL CANCER?MULTIPLE SEX PARTNERS,UNCIRCUMSCRIBED,EARLY MENARCHE,PAPILLOMAVIRUS?
11]WHICH TWO CUSPS OF MAND PRI 1 MOLAR MAKE UP TRANSVERSE RIDGE?
12]CLASS II RELATIONSHIP?INCREASED/DEC CONDYLAR DISTANCE,INC/DEC BENNET ANGLE?
12]CULYURE WITH Y OR H SHAPED FILAMENT ORGANISMS WOULD BE?
13]WHATS POSTERIOR TO AZYGOUS VEIN?
14]PATIENT COMESCOMES WITH FRACTURED FEMUR DIES WITH IN COUPLE OF HOURSDUE TO WHICH EMBOLI?
15]PATIENT WITH LEUKEMIA HAS SUDDEN BLEEDING FROM GUMS REASON WOULD BE?
16]IF MANDIBULAR CANINE ON RIGHT SIDE IS LOST,HOW DOES IT AFFECT PTOTUSIVE CONTACTS ON THE LEFT CANINE?




4]what is not involved in translation?
Ans:No error checking is involved.

5what is not involved in collagen synthesis?mitochondrion,snrp,etc
Ans: Endoplasmic reticulum,Golgibodies are for sure involved.

6]the structure and nomenclature of the nucleotide bases eg the nomenclature of atp when it is broken down.is it adenine ,adenosine,etc
Ans: Adenine

8]listeria causes dysentery,cholera ,fecal death,gastroenteritis
Ans: it causes food borne diseases..I will go with gastroenteritis.

9]high intensity disinfectant??kill hepB,TB,ALLSPORES?
Ans: Should kill TB

10]WHAT DOES NOT PREDISPOSE TO CERVICAL CANCER?MULTIPLE SEX PARTNERS,UNCIRCUMSCRIBED,EARLY MENARCHE,PAPILLOMAVIRUS?

Ans:UNCIRCUMSCRIBED

11]WHICH TWO CUSPS OF MAND PRI 1 MOLAR MAKE UP TRANSVERSE RIDGE?
Ans: Buccal & lingual

12]CLASS II RELATIONSHIP?INCREASED/DEC CONDYLAR DISTANCE,INC/DEC BENNET ANGLE?
Ans: Decreased condylar distance

12]CULYURE WITH Y OR H SHAPED FILAMENT ORGANISMS WOULD BE?
Ans: Only one I can think of is Candida cause of hyphae(I may be wrong)

13]WHATS POSTERIOR TO AZYGOUS VEIN?
Ans: Vagus NV.......(I found out it lies to the left side so post to azygos lies: lower 8 thoracic vertebrae, Rt post. intercostal arteries.)

14]PATIENT COMESCOMES WITH FRACTURED FEMUR DIES WITH IN COUPLE OF HOURSDUE TO WHICH EMBOLI?
Ans: AIR emboli.this is wrong..........Fat emboli

15]PATIENT WITH LEUKEMIA HAS SUDDEN BLEEDING FROM GUMS REASON WOULD BE?
Ans: In leukemia Gum hypertrophy occurs because of leukemic infiltration.





hey guys do u have answer for these Q

initially, the developing heart is
a. induced by the notochord
b. positioned posterior to the notochord
c. positioned anterior to the prochordal plate
d. between the prochordal plate and the notochord.

2.rodent ulcers commenly seen
above alatragus line
below alatragus line
hair less skin
all of the above


Crevicular fluid contains each of the following EXCEPT one. Which one is the EXCEPTION ?
a. lgA
b. lgG
c. lgE
d. Lymphocytes
e. Polymorphonuclear cells

Crevicular fluid contains IgA, IgG, IgM, albumin, neutrophils, macrophages, B and T lymphocytes

patient who has minimal resistance to a gonococcal infection MOST probably has
a. leukocytosis
b. agammaglobullnemia
c. an eosinophil deficiency
d. deficiency in cell-mediated immunity
e. deficiency in complement factors C6, C7 and C8

Individuals with C5, C6,C7, C8, or C9 deficiency are particularly susceptible to meningococcaland gonococcal infections.

Touch receptors are MOST numerous per unit area in the mucosa of which of the following?
a) Uvula
b) Hard Palate
c) Attached gingiva
d) Tip of the tongue
e) Buccal/labial vestibule


Meissner's corpuscle They are distributed throughout the skin, but concentrated in areas especially sensitive to light touch, such as the fingertips, palms, soles, lips, tongue, face and the skin of the male and female genitals. They are primarily located just beneath the epidermis within the dermal papillae.



ques) Which of the following pairs of amino acids is expected to be found on the interior of a globular protein?
A-Lysine and arginine
B-Arginine and leucine
C-Leucine and valine
D-Valine and glutamic acid
D-Glutamic acid and lysine

it syas interior of globular protien,in interior there are always hydrobhobic n non polar amina acids present,so im confuse among B n C,can sombody solve the problem,
thankyou


if there is ratio of bicarbonate-carbonic acid is 20:1,after sometime it will be 10:1,what do u say it is
1-compensate alkalosis
2-compensate acidosis
3-uncompensate alkalosis
4-uncompensate acidosis





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what is net charge glutamic acid in PH 1
+2
+1
0
-1
-2

hydroxyl gp that participate in enzyme reaction
serine
alanine
glycine
proline
arginine

please explain why u choose ur answers
thanks a lot



Ques 2 . what is net charge glutamic acid in PH 1
Ans. 0 (zero)
Because at pH 7 side chain of amino acids carry a charge which is negative incase of glutamic acid as well as aspartic acid. As the pH decreases, both these acids begin to lose their negative charges and at pH less than 4, they are mainly neutral. So. i think there will be no net charge.

Ques 3. Hydroxyl gp that participate in enzyme reaction
Ans. Serine
It belongs to polar group of amino acids. Polar groups interact with aqueous environment to form H-bonds. Moreover, Its a precursor for certain amino acids (which arginine is not though it is polar). So i think precursor and being polar helps the enzyme reaction.

2008



1. methyl xanthines such as caffine n theophyliine enhance lipolysis in adipose tissue by
a] inducing adenylate cyclase synthesis
b]inducing triglyceride lipase synthesis
c]inhibiting cyclic amp phosphodiestrase activity
d]directly activating intracellular protien kinase
e]enhancing binding of epinephrine to an extra cellular membrane receptor

which of the following can increase the rate of net flux or diffusion of oxygen through the alveolar membrane?
a]decreasing the temperature
b]inc the cross sectional area
c]decreasing the conc. gradient
d]inc path lenght of difusion




1)The disto lingual cusp of right mandibular first molar is fractured by excessive contact with opposing maxillary molar during right lateral excursion. Which of the following is the most likely location of the interference?
a lingual surface of maxillary lingual cusp.
b facial surface of maxillary lingual cusp.
c facial surface of maxillary facial cusp.
d lingual surface of maxillary facial cusp.

2) When viewed from mesial, where is the furcation between lingual root and mesiobuccal root located?
a toward facial
b centered faciolingually (not sure)
c toward lingual

3)On the crown of mandibular first molar, the facial cusp ridge of ML cusp originates at the cusp tip and terminates at which of the following?
a lingual groove.
b halfway down the facial surface.
c halfway down the lingual surface.
d mesial portion of central groove.
e mesiolinguo-occlusl point angle area

3)The occlusal table of mandibular first molar normally exhibits which of the following ridges?
a 2 oblique.
b 4 marginal
c 3 transverse
d 4 triangular
e 5 triangular

4)In a normal occlusion, a mediotrusive interference can occur between which of the following cusps?
a maxillary and mandibular supporting.
b maxillary and mandibular guiding.
c maxillary guiding and mandibular supporting.
d maxillary supporting and mandibular guiding

5) When examining normal mandibular arch fom sagittal view, what inclination of teeth can be observed?
a anterior teeth are distally inclined and psterior teeth mesially inclined.
b both anterior and posterior teeth are distally inclined.
c both anterior and posterior teeth are mesially inclined.
d anterior teeth are mesially inclined and posterior teeth are distally inclined.
e anterior and posterior teeth are straight.

6) A bone lesion with radiopaque structures radiating from periphery suggest?
a multiple myeloma.
osteosarcoma



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08

1. in sagital plane diagram ,initial occlusal contact in retruded contacting position occurs
a]at more lateral position than intercusspal position
b]at same verticle position as i.c.p.
c]at more superior position than i.c.p
d]at more inferior position than i.c.p

2when a brief period of hysterical hyperventillation causes respiratory alkalosis ,tetany might be caused by sudden decrease in the following kind of calcium
a]total serum
b]ionized serum
c]citrate bound
d]serum protien bound


Q no. 1 is d -more inferior position than icp

Both retruded contact position & Centric relation are the same [acc. to Wheeler's]

Also ans for Q. 2,shouldn't it be a.- total serum ??

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08

Indicative of myocardial infarction if found at increased serum levels:
A. Myosin
B. Troponin
C. Tropomyosin
D. Myosin kinase
E. Myosin phosphatase

B)ans) It is important to note that cardiac troponins are a marker of all heart muscle damage, not just myocardial infarction,Other conditions that directly or indirectly lead to heart muscle damage can also therefore increase troponin levels.




Which of the following glands are constituents of blood supply LEAST readily available to parenchyma?
A. Thymus
B. Spleen
C. Lymph node
D. Peyer's patch
E. Pharyngeal tonsil..


in the adult thymus the blood supply is isolated from the parenchyma but in the child thymus the blood is NOT as isolated from the parenchyma.



Constituent of epithelial cells or tissues that gives a positive PAS reaction:
A. Cilia
B. Nuclei
C. Nucleoli
D. Brush Borders

please what does PAS reaction mean?????
and hope that you explain when you answer.

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08

1. Healthy female,second encounter with antigen with antibody response.Secondary response will differ from the first encounter by:

A. Significant degree of cross reactivity with her own tissue.
B. Apprearing much lower since B and T cells have been exhausted.
C. Production of antibodies predominantly of IgM class.
D. Synthesis of antibodies in much higher titer that exhibit a better fit for antigen.

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08

1. Which of the following muscle positions the condyle in the most superior anterior position?
a.masseters and digastrics.
2.masseter and medial pterygoids\
3.temporalis and sternocleidomastoids.
4 temporalis and superior lateral pterygyoids.
5.medial ptreygyoid and sternocleidomastoid.

2.
in class 3 mal;ooclusion the mesiofacial cusp of mandibular first molar occlueds in the:
1.mesial fossa of the first premolar.
2.central fossa of upper 6
3.mesial fossa of upper 5
4.embrasure between upper 5 and 6.
5.embrasure btw upper 6 and 7.

3.when viewdfrom the facial aspect ,the crown of the mandibular first premolar has an occlusal outline that exhibits whichof the following characteristics?
1.cusp tip which is offset to the distal
2.cusp tip which is centered mesiodistally.
3distoooclusal slope longer than mesio-occlusal slope.
4.mesioooclusal slope longer thn do slope.


4.Which of the following anatomic features will restrict the amount of lateral shift that can occur on a working side condyle?

1.medial wall of the articular fossa on working side.
2.superior wall of the articular fossa on the non working side.
3.capsular ligament.
4.stylohyoid ligament
5.stylomandibular ligament.



5 In a left lateral movement which cusp of the lower 6 has potential to contact the mesiolingual cusp of maxillary right first molar?
1.distal
2.distofacial
3.mesiolingua
4.distolingual



08
-Total uniary nitrogen excretion in LEAST when and individaul is?
a-starving
b-on a well balanced diet
c-on a diet containing adequate fat and carbohydrate but no protein^^^
d- on a diet contains adequate protein bu no fat of carbohydrate

3- Which disinefective is effective against herpes simplex viru but not rhinovarius?
a-Sodium Hypochlorite
b-Phenolics
c-gLuteraldehydes
d-70% Isopropyl Alcohol^^^

4- Initially the developing heart is?
a-Induced by notochord
b-Position posterior to notochord
c-Position anterior to the procordal plate^^^
d-Between the procordal plate and protochard

5-When viewed occlusualy, the axis of which of the following groups of teeth tend to be aligned nearest to a straight line?
a- Right and left maxillary central and lateral incisors
b- Right and left mandibular central and lateral incisors
c- Maxillary and left mandibular central and lateral incisors
d- All maxillary first premolars and first molars^^^
e- all mandibular anterior teeth

6-A urine sample with a pH of 5.7 will have a H+ ion conc of -?


Ph=

7-How does one calculate the fluoride content in PPM in a tooth paste?

8- HOw uncouplers affect P/O ratio? Increase or decrease?


P:O = [ATP formed] : [oxygen consumed]

In oxidative phosphorylation, Uncouplers - energy lost as heat without
Atp synthesis, hence decrease in p:oops: ratio


9- Colonies with H or Y shaped filamentous m-oranisms? can be fungi

10- Which of the following describes and example of innate immunity?
a-An allergic reaction to insect venom
b-The classical pathway of complement^^^
c-The destruction of virus infected cells fo T-Killer cells
d- The production IgG in response to insect venom
e-The alternative pathway of complement



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1The sliding movement in the TMJ occurs between which of the following
a. disks and articular eminence.^^^
b. mandibular heads and articular eminences.

2Enamel rods converge as they pass from the dentinoenamel junction toward the surface in the area of the
a. cervical line of permanent teeth.
b. cervical line of primary teeth.
c. fissures.^^^

4. In maximum opening the condyles are positioned

a. in the anterior glenoid fossa^^^
b. in the posterior glenoid fossa
c. either inferior to the articular tubercle or anterior to it

6 Which of the following explains why the digestive action of salivary amylase continues for some time after swallowing?
a. Gastric HCI increases the digestive action of amylase
b. Gastric mucin lubricates the bolus and assists amylase activity
c. The amylase inside the bolus is protected from the inactivating action of gastric HCI.^^^
d. Water absorption by the stomach concentrates amylase and make its action more effective

whaich has lower P02

-venous blood or expired air ------ dont no

in essential hypertension , which of the following represents the classic autopsy finding in the kidney?
a.pyelonephritis
b.glemerulonephritis
c.begin nephrosclerosis^^^
d.renal artery stenosis
e.renal infarction

68] The mandiublar condyle is covered with ....

a. Elastic tissue
b. Hyanline
c. Periostium
d. Collagenous tissue^^^


12. The inability to move the diaphragm because of a complete spinal section at
-C2^^^
-C6
-C7
-C8

30) Which of the following is a nucleotide?

A. Urate
B. Uracil
C. Ribose
D. Adenosine
E. Thymidylate^^^


The cell membrane is LEAST permeable to which of the following substances?

A. O2
B. CO2
C. H2O
D. Sodium^^^
E. Ethanol


24) Each of the following is a type of inflammatory exudates EXCEPT one. Which one is the EXCEPTION?

A. Serous
B. Fibrous^^^ not sure
C. Purulent
D. Fibrinous
E. Pseudomembranous



Types of exudates

1. Serous - thin fluid, relatively low in protein.
2. Fibrinous - rich in fibrin or fibrinoid.
3. Suppurative (pus) - neutrophils and debris.
4. Hemorrhagic - occurs when vessels rupture.

19) Which of the folliwng represents a risk factor for the development of endometrial carcinoma?

A. HPV infection
B. Endometriosis
C. Multiple leiomyomas
D. Multiple pregnancies
E. Hyperestrogenism^^^

15) Which of the following anatomic factors will restrict the amount of lateral shift that can occur on a working condyle?

A. Medial wall of the articular fossa on the working side
B. Superior wall of the articular fossa on the non-working side
C. Capsular ligaments^^^
D. Stylohyoid ligament
E. Stylomandibular ligament




Originally Posted by anudoc
1 which of the following can be increased by polypeptide harmones except one. Which one is the exception?
a inositol triphosphate concentration.
b intracellular calcium concentration.
c intracellular potassium concentration
d adenylate cyclase activity
e protein kinase c activity

2 which of the following is a nucleotide.
a urate
b uracil
c guanine
d adenosine
thymidylate

3 A single impulse travels down an alpha motor axon. This results in which of the following?
a the activation of a single motor unit.
b the contraction of one muscle fibre
c a subthreshold generator potential
d a muscle action potential without contraction
e brief repetitive firing of muscle fibres.

4 shape of pulp canal of mandibular canine at mid root section?
Ans: oval, mesiodistally compressed

5 which of the following restorations is the least likely to interfere with a patients physiologic maximum intercuspal position contacts?
a distolingual class lll on maxillary right canine.
b MO on a mandibular right first molar
c MOD on a maxillary right second premolar.
d MO on a maxillary left first molar.

6 The articulating surfaces and non articulating surfaces of tmj are covered by? articulating surface by fibrocartilage, what about non articulating surface????
Non-articular surfaces - synovial membrane

7 From occlusal aspect which mandibular pre molar has the most pentagonal shape of its crown outline?
a first
b Y type second
c U type second
d H type second
e X type second

8 which of the following crown surfaces of teeth has a contact area that is theoritically located at the most cervical level?
a mesial of tooth # 6
b distal of tooth #12
c mesial of tooth #3
d distal of tooth #11
e mesial of tooth#7

9 Working side condye performs which movements?

mainly rotation


Which structure is closest to occlusal plane?
a. mandibular foramen
b. external oblique ridge
c. mental foramen



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prostaglandin in seminal fluid thought to

cause ovulation
stimulate muscular contraction in uterus
clip_image002.gif
:
stimulate vestibular glands to produce mucus

Ans: It is a tricky Q. Seminal fluid contains Fructose & prostaglandin
Fructose : provides oxidative energy for sperm
Prostaglandin: Induction of contractions in uterus to help prople the sperm forward.


prevotella intermedia found in oral cavity
immediately after a PDL disease( not sure)
or long after o PDL disease


max central incisor cross sectioned at cervical line will have
triangular
oval form


please explain the effect of tetracyclin if taken by mother in second trimester ..
Ans: Second trimester is from week 13 to almost week 25 of intrauterine life(i.e 4-6 mnths of pregnancy) we have to think abt the teeth which ones are forming around that area. Almost all primary teeth will be stained.




in cyanide poisining
what type of transport will be present:
simple diffusion ( not sure)
facilitated
active

cyanide poisoning poisons oxidative phosphorylation...so hampers active transport..



For prevotella intermedia qeustion none of choice is correct as It is cause of PDL disease and it should be present at the time of Disease or before PDL disease...

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1 Infection with Histoplasma capsulatum in normal, healthy individuals is usually a:thumbdown:
a. dermatomycosis
b. opportunistic infection
c. rapidly spreading disease
d. self-limiting, benign disease
e. disease localized in the blood

2.Each of the following statements about lymphocyte activation is correct EXCEPT one. Which one is the EXCEPTION ?
a. Interleukin 5 is a D cell growth and differentiation factor
b. Interleukin 2 stimulates proliferation of T and B lymphocytes
c. B lymphocytes recognize antigen on the surface of antigen-presenting cells in the context of HLA-D molecules
d. T lymphocytes recognize antigen on the surface of antigen-presenting cells in the context of HLA-B molecules

3.Which of the following describes an example of innate immunity ?
a. An allergic reaction to insect venom
b. The classical pathway of complement
c. The destruction of virus-infected cells by T-killer cells
d. The production lgG in response to insect venom
e. The alternative pathway of complement

i think it E .becoz altenative pahtway is not antibody dependent.am i correct?



4. The epidemic of HIV-related disease bears major responsibility for the resurgence of which respiratory pathogen ?
a. Streptococcus pneumoniae
b. Hemophilus influenzae
c. Streptococcus pyogenes
d. Mycobacterium tuberculosis
e. Mycoplasma pneumoniae


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Initially, the developing heart is
a. induced by the notochord
b. positioned posterior to the notochord
c. positioned anterior to the prochordal plate
d. between the prochordal plate and the notochord.

i saw many answer for this one please someone confirm if sure of right answer


the largest incisal/ occlusal embrasure is located between which of the
following teeth

a. Maxillary central and lateral incisors

b.Mandibular central and lateral incisors

c.Maxillary lateral incisor and canine (ans given in ans key)

d.Mandibular lateral incisor and canine
e.Maxillary canineand first premolar.
But in decks ans is ( e)




he answer to the 1st q is c, ie anterior to notochord, 2nd q it is c,i would go with it.

Xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 
1.in the intercuspal position,the maxillary posterior teeth oppose
a.facial inclines of facial cusps
b.lingual inclines of facial cusps
c.facial inclines of lingual cusps
d.lingual inclines of lingual cusps

1.a,b.c
2.a,b,d
3.a,c
4.b,c
5.all the above

2.as the teeth are closed in intercuspal position ,the final movemant of the mandible is directed by the
1.height of the free way space
2.strength of the muscle sof mastication
3.cusp fossa relation ship of opposing teeth
4.ligaments that extend from ythe skull to mandible
5.shape of the articular eminnence of the temporo mandibular joint

3.at the same time as the supre hyoid muscles co nteact during swallowing ,a downward displacement of the mandible is prevented by the contraction of the
1.infre hyoid muscle
2.masticatory muscles
3.anterior cervical muscles
4.posterior cervical muscles
5.muscles of facial expression
 
1) which of the following directly catalyses urea formation in a cell?
a urease
b uricase
c arginase
d glutaminase

20 under physiologic conditions, the lowest partial pressure of oxygen is found in
a expired air
b alveolar air
c venous blood
d arterial blood
e normal atmosphere air

3) cushing syndrome is characterised by each of the following except one which one is the EXCEPTION?
a increased protein anabolism
b increased androgen levels
c hyperglycemia
d hypertension
e hyperkalemia
cushing syndrome causes both protein catabolism and hypokalemia

4) which of the following histologically describes oral mucosa on the floor of the mouth?
a non keratinised epithelium with lamina propria and sub mucosa
b nonkeratinised epithelium with lamina propria but no sub mucosa
 
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1.in the intercuspal position,the maxillary posterior teeth oppose
a.facial inclines of facial cusps
b.lingual inclines of facial cusps
c.facial inclines of lingual cusps
d.lingual inclines of lingual cusps

1.a,b.c
2.a,b,d
3.a,c
4.b,c
5.all the above

2.as the teeth are closed in intercuspal position ,the final movemant of the mandible is directed by the
1.height of the free way space
2.strength of the muscle sof mastication
3.cusp fossa relation ship of opposing teeth
4.ligaments that extend from ythe skull to mandible
5.shape of the articular eminnence of the temporo mandibular joint

3.at the same time as the supre hyoid muscles co nteact during swallowing ,a downward displacement of the mandible is prevented by the contraction of the
1.infre hyoid muscle
2.masticatory muscles
3.anterior cervical muscles
4.posterior cervical muscles
5.muscles of facial expression

1) which of the following directly catalyses urea formation in a cell?
a urease
b uricase
c arginase
d glutaminase

20 under physiologic conditions, the lowest partial pressure of oxygen is found in
a expired air
b alveolar air
c venous blood
d arterial blood
e normal atmosphere air

3) cushing syndrome is characterised by each of the following except one which one is the EXCEPTION?
a increased protein anabolism
b increased androgen levels
c hyperglycemia
d hypertension
e hyperkalemia
cushing syndrome causes both protein catabolism and hypokalemia

4) which of the following histologically describes oral mucosa on the floor of the mouth?
a non keratinised epithelium with lamina propria and sub mucosa
b nonkeratinised epithelium with lamina propria but no sub mucosa

Please highlight the correct answers in a different color so that, its easy to read. Thanks
 
08
1. in sagital plane diagram ,initial occlusal contact in retruded contacting position occurs
a]at more lateral position than intercusspal position
b]at same verticle position as i.c.p.
c]at more superior position than i.c.p
d]at more inferior position than i.c.p

3enamel rods converge as they pass from dentinoenamel junction towards the surface in the area of
a]cervical line of perm teeth
b]cervical line of primary teeth


IN the Rt laterotusive , F cusp of the max rt 1st M passes through which of the following groove of mand rt 1st molar .
1 Lingual
2 central
3 MF (If the question is about MF cusp, or else DF groove)
4 DF
what i think is MF. what do u think am i right




Q the height of the lingual cusps of th mand 1st molar accomodate which of the following ---
1 centric relation
2 working movement
3 protusive position
4 non working movement
5 maximum intercuspation
with explanation please ---
thankyou



Working Movement, coz' they are guiding cusps and do not play a role in the other options.
__________________
Xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx


which of the following statements BEST describe GTP-binding
proteins(G-Proteins)?
a.are important components of steroid harmone signal transduction
b.catalize the reaction which produces diacylglycerol
c.are tightly bound to adenylate cyclase
d.usually inactive protein kinase C
e.are membrane proteins

Total urinary nitrogen excretion in LEAST when an individual is?
a.starving
b.on a well balanced diet
c.on a diet containing adequate fat and carbohydrate but no protein
d.on a diet containing adequate pretein but no fat or carbohydrate


1. IL-5 is for eosinophil growth and Il-4 is for B-cell proliferation.
2. G-Proteins - option a sounds perfect to me though there are G-protein receptors that are membrane proteins. (clarify).
3. Starving

__________________
C



xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx


types of inflammatory exudates exept:
fibrous
fibrinous
pseudomembranous


wich is a nucleotide:
urate
uracil
adenosine
thymidylate




Xzxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

2. In primary first molars, which portion of the crown is shorter occlusongigivally?
a. mesial
b. distal
c. midfacial
d. midlingual

7 From occlusal aspect which mandibular pre molar has the most pentagonal shape of its crown outline?
a first
b Y type second
c U type second
d H type second
e X type second

9 Working side condye performs which movements?

mainly rotation

xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Thanks.
 
HI Sravan,



correct me if the foll answers r rong with explaination .....


A).in the intercuspal position,the maxillary posterior teeth oppose
a.facial inclines of facial cusps
b.lingual inclines of facial cusps
c.facial inclines of lingual cusps
d.lingual inclines of lingual cusps

1.a,b.c2.a,b,d
3.a,c
4.b,c
5.all the above



B) A- the height of the lingual cusps of th mand 1st molar accomodate which of the following ---
1 centric relation
2 working movement 3 protusive position
4 non working movement
5 maximum intercuspation
with explanation please ---
thankyou


acc to me answer r
A - 1
and B - 2 Working Movement, coz' they are guiding cusps and do not play a role in the other options.
 
HI Sravan,



correct me if the foll answers r rong with explaination .....


A).in the intercuspal position,the maxillary posterior teeth oppose
a.facial inclines of facial cusps
b.lingual inclines of facial cusps
c.facial inclines of lingual cusps
d.lingual inclines of lingual cusps

1.a,b.c2.a,b,d
3.a,c
4.b,c
5.all the above



B) A- the height of the lingual cusps of th mand 1st molar accomodate which of the following ---
1 centric relation
2 working movement 3 protusive position
4 non working movement
5 maximum intercuspation
with explanation please ---
thankyou

acc to me answer r
A - 1
and B - 2 Working Movement, coz' they are guiding cusps and do not play a role in the other options.
1. If you include the Functional outer aspect of Mandibulars, then ans 1 is correct. I was not 100% sure about that.
2. I got tricked.
 
1) Coagulase production by staphylococcus aureaua is important in pathogenicity because it
a helps to establish the typical abscess lesion
b helps to establish typical cellulitis lesion.
c allows the organism to adhere tightly to tissue
d provides polysaccharide capsule to inhibit phagocytosis.
e non specifically binds to Fc portion of IgG molecule

2) Staphylococcus aureus most commonly causes
a pyoderma
b septicemia
c chronic infection
d exogenous infection

3) which of the following represents most obvious difference between primary maxillary second molar and permanent maxillary first molar?
a the primary tooth has three roots
b the primary tooth has much narrow measure at cej compared to its contact area.
c the permanent tooth has a trait of carabelli or fifth cusp
d the perrmanent tooth has a rhomboid occlusal outline

4) which of the following primary grooves uniting in the distal pit on the occlusal surface of mandibular second molar represents the one that normally has no counterpart in the distal pit of first molar?
a distolingual
b DF triangular
c DL triangular
d distal marginal
e distal portion of central

5) the distolingual cusp of maxillary second molar in protrusive movement has potential to oppose which morphologic entity of which molar?

Morphologic entity Mandibular molar
a mesial portion third
b central fossa second
c mesial marginal ridge second
d distal transverse ridge second

6)The H occlusal groove pattern is characteristic of which pre molar?
a maxillary first
b mandibular first
c mandibular second with two cusps
d mandibular second with three cusps

7) Which of the following represents the groove on occlusal surface of maxillary pre molars that originates in the mesial pit and extends toward mesiobuccal line angle?
a central
b MB secondary
c MB triangular
d ML triangular
e Mesial marginal
 
1) Coagulase production by staphylococcus aureaua is important in pathogenicity because it
a helps to establish the typical abscess lesion
b helps to establish typical cellulitis lesion.
c allows the organism to adhere tightly to tissue
d provides polysaccharide capsule to inhibit phagocytosis.
e non specifically binds to Fc portion of IgG molecule

2) Staphylococcus aureus most commonly causes
a pyoderma
b septicemia
c chronic infection
d exogenous infection

3) which of the following represents most obvious difference between primary maxillary second molar and permanent maxillary first molar?
a the primary tooth has three roots
b the primary tooth has much narrow measure at cej compared to its contact area.
c the permanent tooth has a trait of carabelli or fifth cusp
d the perrmanent tooth has a rhomboid occlusal outline

4) which of the following primary grooves uniting in the distal pit on the occlusal surface of mandibular second molar represents the one that normally has no counterpart in the distal pit of first molar?
a distolingual
b DF triangular
c DL triangular
d distal marginal
e distal portion of central

5) the distolingual cusp of maxillary second molar in protrusive movement has potential to oppose which morphologic entity of which molar?

Morphologic entity Mandibular molar
a mesial portion third
b central fossa second
c mesial marginal ridge second
d distal transverse ridge second

6)The H occlusal groove pattern is characteristic of which pre molar?
a maxillary first
b mandibular first
c mandibular second with two cusps
d mandibular second with three cusps

7) Which of the following represents the groove on occlusal surface of maxillary pre molars that originates in the mesial pit and extends toward mesiobuccal line angle?
a central
b MB secondary
c MB triangular
d ML triangular
e Mesial marginal

Shuntyman, You are doing a good job of maintaining one thread for all new Part I questions. Keep it up. I hope others post their questions in this one too. :)

I have a question:
1. If the pO2 in blood is very low, which receptors are primarily stimulated.? Is it the Carotid body chemo receptors or Carotid Sinus baroreceptors.?
 
what a great thread shuntyman :thumbup::thumbup: thanks and will post my question again and will be answered with some explanation.
an old question still no answer ? .
which describes the proper axial inclination of palatal root of maxillary 2nd molar--1.vertical
2.mesial and lingual
3.mesial and facial
4.distal and facial
5.distal and lingual
thanks
.
 
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thanks skabbaraju but some explanation to your answer will be appreciated. thanks again..

and another question please

When are nerve fibers hypoexcitable?
  1. During resting potential
  2. At the firing level
  3. During local depolarization
  4. During negative after-potential
  5. During positive after-potential.
the answer is E, but hypoexcitable means hyperpolarized so it needs greater stimulus to fire action potential it's like relative refractory potential. and think the answers should be D- where more negative is inside due to exits of K+.
any comment for this one.
 
thanks skabbaraju but some explanation to your answer will be appreciated. thanks again..

and another question please


When are nerve fibers hypoexcitable?
  1. During resting potential
  2. At the firing level
  3. During local depolarization
  4. During negative after-potential
  5. During positive after-potential.
the answer is E, but hypoexcitable means hyperpolarized so it needs greater stimulus to fire action potential it's like relative refractory potential. and think the answers should be D- where more negative is inside due to exits of K+.
any comment for this one.


1. in sagital plane diagram ,initial occlusal contact in retruded contacting position occurs
a]at more lateral position than intercusspal position
b]at same verticle position as i.c.p.
c]at more superior position than i.c.p
d]at more inferior position than i.c.p



HEY GUYS DONT YOU THINK THAT THE ANSWER TO THE ABOVE QUESTION BE
ATMORE SUPERIOR POSITION THAN I.C.P.
 
1. in sagital plane diagram ,initial occlusal contact in retruded contacting position occurs
a]at more lateral position than intercusspal position
b]at same verticle position as i.c.p.
c]at more superior position than i.c.p
d]at more inferior position than i.c.p



HEY GUYS DONT YOU THINK THAT THE ANSWER TO THE ABOVE QUESTION BE
ATMORE SUPERIOR POSITION THAN I.C.P.

I think the answer is D- more inferior position than i.c.p why ??..just take a look at poselt's envelop sagital view to found the retruded position is sitting below and behind intercuspal position...
 
I think the answer is D- more inferior position than i.c.p why ??..just take a look at poselt's envelop sagital view to found the retruded position is sitting below and behind intercuspal position...


but that is the postion of tooth relative to the tooth.
poisslet`s diagram doesnt tell us about condyle position
e.g
in centric relation the condyle is at its most superior and anterior position
this means that condyle is even superior in position as compared to condyle position in icp.
but poisslet`s diagram tells that in centric relation position the teeth are at inferior position to that of the icp
which is also true
so i feel that these two concepts should not be confused
 
but that is the postion of tooth relative to the tooth.
poisslet`s diagram doesnt tell us about condyle position
e.g
in centric relation the condyle is at its most superior and anterior position
this means that condyle is even superior in position as compared to condyle position in icp.
but poisslet`s diagram tells that in centric relation position the teeth are at inferior position to that of the icp
which is also true
so i feel that these two concepts should not be confused

that's right i think and the question about occlusion contact and i didn't mention the condyle position when refer to posselt's envelop that is the realation between teeth during movement..
in my opinion when mandibular teeth go out the ICP they will move down whatever the direction is because their cusp tips will move on the triangular ridges of the upper teeth........... and thanks again.
 
that's right i think and the question about occlusion contact and i didn't mention the condyle position when refer to posselt's envelop that is the realation between teeth during movement..
in my opinion when mandibular teeth go out the ICP they will move down whatever the direction is because their cusp tips will move on the triangular ridges of the upper teeth........... and thanks again.

thats true,
 
here is another doubt

sterile cutaneous manifestations are seen in each of the fllowing excepts

a)scarlet fever
b)rheumatic fever
c)tertiary syphilis
d)meningoccocal meningitis
e)staph aureus scalded skin syndrome
 
here is another doubt

sterile cutaneous manifestations are seen in each of the fllowing excepts

a)scarlet fever
b)rheumatic fever
c)tertiary syphilis
d)meningoccocal meningitis
e)staph aureus scalded skin syndrome

what is sterile cutanaeous?????????
 
:sleep:hey guys these are few questions that i cannot understand or the reason behind the answer is hard to find,
plz help with the explanations for answers if possible


Q1 . breathing a gas mixture with 5% co2 ultimately leads to .......
a.hypoventilation
b.a decrease in heart rate
c.stimulation of central receptors
d inhibtion of peripheral receptors
e decrease in CSF H+ concenttation

Q2. which of the following has high affinity for binding Ca & collagen in calcifying matrix?
a calcitonin
b osteogenin
c osteonectin
d amelogenin
e fibronectin

Q3 temp. regulating mechanism that increase heat production?
a. increase voluntary activity............. how?
b. increased epinepherine secretion.............how?
c.cutaneaous vasoconstriction.......................why this is not the answer along with a & B

Q4 what is chronotropy?
Q5 what is intropy?

Q6 does stimulation of carotid sinus effects change in heart rate, arterial blood pressure or venous return?


Q7wht is after potential?

Q8 the action potential depends on which ion
Na or K

Q9 by what the H ion is liberated from kidney <most amount>
NH4, HCO3,

Q10 is Ca present in saliva? or is it a primary electrolyte of saliva?
 
each of the following polymer is matched with activated precusor except one
1)sucrose - dextran
2)glucose - glycogen
3)sucrose - mutan
4)UDP glucose - glycogen
5)sucrose - levan
 
Complementary DNA libraries include
1)all of the DNA
2)only genes that are transcribed into mRNA
3)single stranded DNA synthesized by reverse transcription
 
release of which of the following hormones is controlled by nerve impulses
insulin,epinephrine,testesterone,parathyroid,deoxycorticosterone
 
release of which of the following hormones is controlled by nerve impulses
insulin,epinephrine,testesterone,parathyroid,deoxycorticosterone


That's why you can survive without your adrenal medulla! :thumbup:

(I think they ask that sometimes, too :D)
 
I'll take some guesses...any disagreements?

:sleep:hey guys these are few questions that i cannot understand or the reason behind the answer is hard to find,
plz help with the explanations for answers if possible


Q1 . breathing a gas mixture with 5% co2 ultimately leads to .......
a.hypoventilation
b.a decrease in heart rate
c.stimulation of central receptors
d inhibtion of peripheral receptors
e decrease in CSF H+ concenttation

Q2. which of the following has high affinity for binding Ca & collagen in calcifying matrix?
a calcitonin
b osteogenin
c osteonectin
d amelogenin
e fibronectin

Q3 temp. regulating mechanism that increase heat production?
a. increase voluntary activity............. makes you restless, forces you to move about
b. increased epinepherine secretion.............stimulating sympathetic NS?
c.cutaneaous vasoconstriction.......................you get cutaneous vasoDILATION to dissipate heat. If you need to conserve heat, then you CONSTRICT vessels at the skin to get blood to the more important organs

Q4 what is chronotropy? heart rate

Q5 what is intropy? force of muscle contraction

Q6 does stimulation of carotid sinus effects change in heart rate, arterial blood pressure, I think? Since it's a baroreceptor in the first place or venous return?



Q7wht is after potential? the membrane potential where it's ready for action, but hasn't been depolarized yet. (I think the same as resting potential?)

Q8 the action potential depends on which ion
Na or K

Q9 by what the H ion is liberated from kidney <most amount>
not sure. If it says NH3, I think it'd be that. I thought bicarbonate is controlled to act as a buffer, not to actually release H+. But I don't quite understand your wording for the question?

Q10 is Ca present in saliva? or is it a primary electrolyte of saliva? it sure is! That's how teeth get remineralized
 
in a primary dentition which tooth erupts immediately aft maxillary lateral incisor?
maxially molar
mandibular molar
 
I found a nice summary of what sneaks between the constrictor muscles. I ALWAYS forget this and it's somewhat tough to find a definitive list:

Along the lateral sides of the pharynx, you will find four gaps associated with the superior, middle and inferior constrictors. Specific structures pass through each of these gaps.

Above the superior pharyngeal constrictor:

1. auditory tube (AT)
2. levator palati (LP)
3. ascending palatine artery (APA)

Between the superior and middle constrictors:

1. stylopharyngeus muscle (SP)
2. glossopharyngeal nerve (IX)

Between the middle and inferior constrictors:

1. internal laryngeal branch of the superior laryngeal nerve (IL)
2. superior laryngeal artery from the superior thyroid artery (SLA)

Below the inferior constrictor:

1. inferior laryngeal nerve ( ILN) (recurrent laryngeal branch of the vagus)
2. inferior laryngeal artery (ILA) (inferior thyroid)



(From http://home.comcast.net/~wnor/lesson8.htm)
 
release of which of the following hormones is controlled by nerve impulses
insulin,epinephrine,testesterone,parathyroid,deoxycorticosterone

both of these are controlled by nerve impulse
infact epinephrine stimulates the release of insulin
 
I'll take some guesses...any disagreements?

in the prevention of heat loss question , the old question papers doesnt give vasoconstriction the option,
the only option they give is
epinepherine secretion + increase in voluntary activity?
 
1. where can you find mitochondria in salivary glands?
2. where is uric acid produced?
3. whats the role of zinc in the body?
4. which of the following is not involved in the formation of dentin or enamel
vit A,B,C,D,E < confused between B&E>
5. what is the site of glycosylation?
6. which AA cannot undergo glycosylation?
7. which part of the nepheron uses most of the energy? why?
 
1. where can you find mitochondria in salivary glands? striated ducts
2. where is uric acid produced? all over, I believe. Wherever purines are catabolized by xanthine oxidase
3. whats the role of zinc in the body? helps immune system, olfaction, part of carbonic anhydrase, cofactor for other enzymes
4. which of the following is not involved in the formation of dentin or enamel
vit A,B,C,D,E < confused between B&E> I think neither B nor E, just A, C, D
5. what is the site of glycosylation? You mean for proteins? I think while they're still in the RER
6. which AA cannot undergo glycosylation?
7. which part of the nepheron uses most of the energy? why? I'd guess the prox tubule, since that's where most of the transport happens
.
 
wht is the site of glycosylation for collagen?
and what are the AA that are involved in glycosylation?
 
1. where can you find mitochondria in salivary glands?-Striated ducts
2. where is uric acid produced? prouced by the xanthine oxidase produced in the blood on purine salvation
3. whats the role of zinc in the body?- Zinc is used as a cofactor with enzyme carbonic anhydrase. Zinc is involved in the process that converts inactive hormone T4 into active hormone T3.
4. which of the following is not involved in the formation of dentin or enamel
vit A,B,C,D,E < confused between B&E> answer is vitE
5. what is the site of glycosylation?starts Endoplasmic reticulum and continues in golgi complex
6. which AA cannot undergo glycosylation? Hydroxylysine
 
Originally Posted by shreyalokray

each of the following polymer is matched with activated precusor except one
1)sucrose - dextran
2)glucose - glycogen
3)sucrose - mutan
4)UDP glucose - glycogen
5)sucrose - levan - answer

As levan are produced from fructose
 
Originally Posted by shreyalokray

each of the following polymer is matched with activated precusor except one
1)sucrose - dextran
2)glucose - glycogen
3)sucrose - mutan
4)UDP glucose - glycogen
5)sucrose - levan - answer

As levan are produced from fructose


this question was posted before and think the answer is 3)sucrose - mutan..
and think dextran and levan both are derivative of sucrose and glucose and UDP glucose are also compose glycogen so the one still is 3..
please correct me ..
thanks
 
this question was posted before and think the answer is 3)sucrose - mutan..
and think dextran and levan both are derivative of sucrose and glucose and UDP glucose are also compose glycogen so the one still is 3..
please correct me ..
thanks


No, I believe fructose is the only derivative of levan. Sucrose = dextrans, fructose = levans. Levan is actually a type of fructan, or a polymer made of fructose. Hope this helps!
 
No, I believe fructose is the only derivative of levan. Sucrose = dextrans, fructose = levans. Levan is actually a type of fructan, or a polymer made of fructose. Hope this helps!
i am doing questions from crack the nbdeand i came across so many questions which i feel are wrong please can u let me know that i should follow it or not
thanks shuntyman for this thread
 
on the crown of the mandibular 1 molar, the facial cusp ridge of the ml cusp originates at the cusp tip and normally terminates at which of the following?

a. lingual groove
b halfway down the facial surface
c halfway down the lingual surface
d mesail portion of the central groove
e. ,esiolingual- occlusal point angle area



in primary tooth, which portion of the crowwn is shorter occlusogingivally?
a. mesial
b. distal
c. midfacial
d.midlingual


which of the following muscle has an important influence on the function of the mandible, although it is not generally considered a muscle of mastication?

a. omohyoid
b. geniohyoid
c. mylohyoid
d. digastric
e sternomastoid


deep lingual fossa and prominent marginal ridge are most characteristics of
a. max CI
b. max LI
C. MAND LI
D MAX CANINE
E MAND CANINE

WHICH OF THE FOLLOWING MORPHOLOGIC VARIATION WOULD WORSEN THE PROGNOSIS FOR EXISTING PERIODONTAL DISEASE?

A FUSED ROOTS
B EXCESSIVELY LONG ROOTS
C AMELOGENESIS IMPERFECTA
D SHOVELING TRAIT IN CENTRAL INCISOR


WHICH OF THE FOLLOWING RESTORATIONS IS MOST LIKELY TO INTERFERE WITH A PATIENT'S PHYSIOLOGIC MAXIMUM INTERCUSPAL POSITION CONTACTS?

A DISTOLINGUAL CLASS 3 RESTORATION ON A MAX RIGHT CANINE
B MO ON A MAND RT 1 PREMOLAR
C MOD ON A MAX RT 2 PREMOLAR
D MO ON A MAX LT 1 MOLAR
 
on the crown of the mandibular 1 molar, the facial cusp ridge of the ml cusp originates at the cusp tip and normally terminates at which of the following?

a. lingual groove
b halfway down the facial surface
c halfway down the lingual surface
d mesail portion of the central groove
e. ,esiolingual- occlusal point angle area



in primary tooth, which portion of the crowwn is shorter occlusogingivally?
a. mesial
b. distal
c. midfacial
d.midlingual


which of the following muscle has an important influence on the function of the mandible, although it is not generally considered a muscle of mastication?

a. omohyoid
b. geniohyoid
c. mylohyoid
d. digastric
e sternomastoid


deep lingual fossa and prominent marginal ridge are most characteristics of
a. max CI
b. max LI
C. MAND LI
D MAX CANINE
E MAND CANINE

WHICH OF THE FOLLOWING MORPHOLOGIC VARIATION WOULD WORSEN THE PROGNOSIS FOR EXISTING PERIODONTAL DISEASE?

A FUSED ROOTS
B EXCESSIVELY LONG ROOTS
C AMELOGENESIS IMPERFECTA
D SHOVELING TRAIT IN CENTRAL INCISOR


WHICH OF THE FOLLOWING RESTORATIONS IS MOST LIKELY TO INTERFERE WITH A PATIENT'S PHYSIOLOGIC MAXIMUM INTERCUSPAL POSITION CONTACTS?

A DISTOLINGUAL CLASS 3 RESTORATION ON A MAX RIGHT CANINE
B MO ON A MAND RT 1 PREMOLAR
C MOD ON A MAX RT 2 PREMOLAR
D MO ON A MAX LT 1 MOLAR

please don't forget to correct any answer with explanation pleasssse
 
No, I believe fructose is the only derivative of levan. Sucrose = dextrans, fructose = levans. Levan is actually a type of fructan, or a polymer made of fructose. Hope this helps!

thanks .. but I think sucrose is disaccharide and it's derivatives are fructose and glucose....
levan is a fructose polymer ....
sucrose is a glucose polymer.... and don't find any thing about mutan .. so please what is this mutan ??? thanks
 
thanks .. but I think sucrose is disaccharide and it's derivatives are fructose and glucose....
levan is a fructose polymer ....
sucrose is a glucose polymer.... and don't find any thing about mutan .. so please what is this mutan ??? thanks


sucrose= (glucose+ fructose)n
levan= (fructose+fructose+fructose+.....................)n
mutans= (glucose+glucose+glucose+........................)n

where n is an integer and n>10
 
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