Lets discuss questions of NBDE 1

[d dimps]

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1). .Which angle does a P Wave makes on ECG?
a). .45 degree
b). .180 degree
c). .0 degree
d). .-45 degree
e). .-180 degree.

2). .What is endogenous cholesterol? Most endogenous cholesterol is converted to?
a). .Glucose
b). .Cholic acid
c). .Steroid
d). .Oxaloacetete
e). .Ketone bodies

3). .Which of the following statement is correct regarding Glioblastoma multiforme?
a). .the tumor is most common before puberty
b). .it is classified as a type of meningioma
c). .it is most common type of Astrocytoma.
d). .Its prognosis is generally more favourablethan Grade 1 astrocytoma.
e). .It is derived from the epithelial lining of ventricles

4). .Which of the following pathological changes is irreversible?
a). .fatty changes in liver cells
b). .karyolysis in myocardial cells
c). .glycogen deposition in hepatocyte nuclei
d). .hydropic vacuolization of renal tubular epithelial cells.

5). .An example of Synergism is the effect of?
a). .insulin and glucagon on blood glucose
b). .estrogen and progesterone on uterine motility
c). .growth hormone and thyroxine on skeletal growth.
d). .Antidiuretic hormone and aldosterone on potassium excretion.

 

[karma77]

which one is not correct?( polymers paired with activated precursor ) sucrose dextran
glocose, glycogen
sucrose , mutan
udp glocose, glycogen
sucrose, levan

_which one is the role of vit C?

coenzyme
reducing agent
oxidizing agent
methyl group center

_
which of the following represents the snsory organs concerned with maintenance of skeletal muscle tonus ?
sarcomerers
muscle spindle
golgi tendon organs

_ which of the them is a nucleotid ?
urate
uracil
guanine
adenosin
thymidylate

_
which of them exist in almost equal amount in free and bound forms in blood and in the free form reduces neuromascular iritability ?
iron
sodium
calcium
potasum
magnesium



explain ?


what is the net charge on glutamic acid at ph of 1? +1 . 0, _1


plz explain it

uncompensated respiratory acidosis is characterized by?

norm pco2 low ph low hco3
high pco2 norm ph low hco3
high pco2 low ph high hco3

plz explain it




a urin sample with PH 5.7 has a hydrogen ion concentration of?
_3

2x10

2x 10_4
2x10 -5


explain


for which is the first group of following pairs more likely to be located on surface of a globular protein than the second group of the pair ?


CONH2 COO
CH3 CH(CH3)2
CH2OH NH4
CH3 CH2OH
CH2SH COO

 

[toothfairy482]

nucleoside

 

[pbkal]

which one is not correct?( polymers paired with activated precursor ) sucrose dextran
glocose, glycogen
sucrose , mutan
udp glocose, glycogen
sucrose, levan-answer

_which one is the role of vit C?

coenzyme
reducing agent -answer
oxidizing agent
methyl group center

_
which of the following represents the snsory organs concerned with maintenance of skeletal muscle tonus ?
sarcomerers
muscle spindle-answer(not sure)
golgi tendon organs

_ which of the them is a nucleotid ?
urate
uracil
guanine
adenosin
thymidylate -answer

_
which of them exist in almost equal amount in free and bound forms in blood and in the free form reduces neuromascular iritability ?
iron
sodium
calcium -answer(not sure)
potasum
magnesium



explain ?


what is the net charge on glutamic acid at ph of 1? +1 . 0, _1


plz explain it

uncompensated respiratory acidosis is characterized by?

norm pco2 low ph low hco3
high pco2 norm ph low hco3
high pco2 low ph high hco3

plz explain it




a urin sample with PH 5.7 has a hydrogen ion concentration of?
_3

2x10

2x 10_4
2x10 -5-answer


explain


for which is the first group of following pairs more likely to be located on surface of a globular protein than the second group of the pair ?


CONH2 COO
CH3 CH(CH3)2
CH2OH NH4
CH3 CH2OH
CH2SH COO

correct if im wrong.....

 

[karma77]

What prevent polymerase from falling off the DNA??????????

 

[dominant]

an action potential initiated at the midpoint along the length of an axon will
not propogated
propogated towards the soma
propogate towards the nerve ending
propogate towards both the soma and the nerve ending

Which of the following statement best describe the strength of cardiac muscle contraction ?
decresed when etracellular calcum is incresed
incresed when ext ca is incresed
regulate by vagal impulses

 

[pbkal]

an action potential initiated at the midpoint along the length of an axon will
not propogated
propogated towards the soma
propogate towards the nerve ending
propogate towards both the soma and the nerve ending

Which of the following statement best describe the strength of cardiac muscle contraction ?
decresed when etracellular calcum is incresed
incresed when ext ca is incresed
regulate by vagal impulses

hi
i would say regulate by vagal impulses is the ans for second question.not sure.confirm the right ans.

 

[KiTmAn]

an action potential initiated at the midpoint along the length of an axon will
not propogated
propogated towards the soma
propogate towards the nerve ending
propogate towards both the soma and the nerve ending

Which of the following statement best describe the strength of cardiac muscle contraction ?
decresed when etracellular calcum is incresed
incresed when ext ca is incresed
regulate by vagal impulses

I think for the 1st one...it should propagate both towards the soma and nerve ending

and for the second one.. I feel like it should be increased when extracellular Calcium is increased

please correct me!!!

 

[ssilver]

Which of the following does not carry a risk of infection from hepatitis B patient
A. HBs Ag antigens
B. HBs Ag
C. HBe Ag

HBs Ag antigens are HBs anti bodies. so the answer is A

 

[sohum]

some body pl explain
what is a central facilitation

 

[sohum]

an entergastric reflex produce what effect on gastric motility

 

[cool freak]

an entergastric reflex produce what effect on gastric motility

it inhibits gastric motility...in response to presence of free fatty acids,protiens...given in git physio...check out your kaplan review..
correct me if i'm wrong...

 

[pbkal]

yes!!u r right.enterogastric reflex inhibits gastric motility.

 

[pbkal]

yes!!u r right.enterogastric reflex inhibits gastric motility.

 

[born to win]

Q1 starling's factor inflence the exchange of fluid across the capillary membrane in the liver differ from those of other tissuein that
A Hydrostatic pressure is lower
B HP is higher
C plasma oncotic press is lower
D interstitial fluid oncotic pressure is lower
E interstitial fluid oncotic pressure is higher

Q2 Cause of periodontal disease
A. Shoveling trait in central incisor(which is that)pls mention this trait..
B. excessively long roots
C. excessively short roots
D. fused roots
E.projection

Q3 most common site for cancer of colon?

Q4 Which agent is most often associated with fatalities following influenzal infection?
a influenza
b.H. influenza
c Strep pyogenes
d.Strep. Mitis
e.Staph aureus

Q5 90:10 NO and Oxygen mixture is given to a patient causes respiratory depression to him.. Answer says its because of the respiratory acidosis. how??

Q6 if intercondylar distance decreases
a posterior cusp becomes shorter
b post cusp becomes taller
c working n non working angle decreases
d working n non working angle increases…

Q7 Viewed from occlusal.which 2 teeth may have buccal convergence of proximal surfaces?

Md2nd premolar n Mx 1st PM
Md1st molar n Mx 2nd PM
Mx 1st PM n Md 2nd PM
Mx 2nd PM n Md 1st PM

 

[firasoblast]

Q3 most common site for cancer of colon?

answer is lower part of the descending colon, rectum or sigmoid colon.

 

[pbkal]

Q4 Which agent is most often associated with fatalities following influenzal infection?
a influenza
b.H. influenza
c Strep pyogenes
d.Strep. Mitis
e.Staph aureus

ans-H.influenza.
pls correct if im wrong..

 

[born to win]

Q4 Which agent is most often associated with fatalities following influenzal infection?
a influenza
b.H. influenza
c Strep pyogenes
d.Strep. Mitis
e.Staph aureus

The answer to this is Staph. aureus

 

[pbkal]

Q4 Which agent is most often associated with fatalities following influenzal infection?
a influenza
b.H. influenza
c Strep pyogenes
d.Strep. Mitis
e.Staph aureus

The answer to this is Staph. aureus

can u post the ans for other questions also...

 

[dr.rex]

For anyone interested I just put up for sale on ebay the kaplan lecture notes for part I and the dentessentials book as well. if you have any questions let me know

 

[born to win]

Q1 starling's factor inflence the exchange of fluid across the capillary membrane in the liver differ from those of other tissuein that
A Hydrostatic pressure is lower
B HP is higher
C plasma oncotic press is lower
D interstitial fluid oncotic pressure is lower
E interstitial fluid oncotic pressure is higher

Q2 Cause of periodontal disease
A. Shoveling trait in central incisor(which is that)pls mention this trait..
B. excessively long roots
C. excessively short roots
D. fused roots
E.projection

Donot know the answer but I think they are the ones. what do you all say?

Q3 most common site for cancer of colon? Someone has already answered, i did not have them.

Q4 Which agent is most often associated with fatalities following influenzal infection?
a influenza
b.H. influenza
c Strep pyogenes
d.Strep. Mitis
e.Staph aureus

Q5 90:10 NO and Oxygen mixture is given to a patient causes respiratory depression to him.. Answer says its because of the respiratory acidosis. how??

Q6 if intercondylar distance decreases
a posterior cusp becomes shorter
b post cusp becomes taller
c working n non working angle decreases
d working n non working angle increases

Not sure and no idea if thats correct also

Q7 Viewed from occlusal.which 2 teeth may have buccal convergence of proximal surfaces?

Md2nd premolar n Mx 1st PM
Md1st molar n Mx 2nd PM
Mx 1st PM n Md 2nd PM
Mx 2nd PM n Md 1st PM

i did not understand the question,could anyone explain that to me

 

[shivG]

1)which of foll. produce surfactant?
monocyte
clara cells
type 1 pneumocyte
type 2 pneumocyte

2)which of foll. most common location for artherosclerotic induced aneurism?
thoracic aorta
abdominal aorta
coronary arteries
arch of aorta
common iliac arteries

3)which of foll. represents anerobic organism that is cultured from gingival scrapings and that forms black colonies on heme containing media?
sarcina lutea
bacillus anthrax
veillonella alcalesens
porphyromonas gingivalis
alpha-hemolytic strep cocci

thanks!!

 

[toothfairy482]

1)which of foll. produce surfactant?
monocyte
clara cells
type 1 pneumocyte
type 2 pneumocyte

2)which of foll. most common location for artherosclerotic induced aneurism?
thoracic aorta
abdominal aorta
coronary arteries
arch of aorta
common iliac arteries

3)which of foll. represents anerobic organism that is cultured from gingival scrapings and that forms black colonies on heme containing media?
sarcina lutea
bacillus anthrax
veillonella alcalesens
porphyromonas gingivalis
alpha-hemolytic strep cocci


👍 👍👍

 

[born to win]

EXTRACTION of 3 molar causes damage to which nerve
Answer: inferior alveolar nerve, lingual nerve..

what happens in a cell with decreased amount of citrate??

organisms commonly isolated from the corners of the mouth??

 

[dentaram]

 

[KiTmAn]

EXTRACTION of 3 molar causes damage to which nerve
Answer: inferior alveolar nerve, lingual nerve..

what happens in a cell with decreased amount of citrate??

organisms commonly isolated from the corners of the mouth??

extraction of 3rd molar..damage to lingual nerve!

 

[dentalhelp2006]

Q4 Which agent is most often associated with fatalities following influenzal infection?
a influenza
b.H. influenza
c Strep pyogenes
d.Strep. Mitis
e.Staph aureus

The answer to this is Staph. aureus

I think it is H.influenza

 

[sohum]

1. The mandiublar condyle is covered with ....

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

2. What syndrome is characterized by, increased succeptibility to infection, retinal something
A. Gardner sydrome
B. Hypothyrodism
C. Hypopitutaryism
D. Hyperthyrodism....


3. What characterizes Albers-Jeheurs syndrome?
pl answer

 

[firasoblast]

.


3. What characterizes Albers-Jeheurs syndrome?
pl answer

do u mean peutz-jeghers? never heard of albers-jeheurs!

 

[shivG]

1. The mandiublar condyle is covered with ....

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

2. What syndrome is characterized by, increased succeptibility to infection, retinal something
A. Gardner sydrome
B. Hypothyrodism
C. Hypopitutaryism
D. Hyperthyrodism....


3. What characterizes Albers-Jeheurs syndrome?
pl answer

1-b fibro cartilage answer shud be...
2-b nt sure
3-?

 

[shivG]

1)which of foll. represents a segment of the bronchial tree tat is <1 mm in dia. and lined by simple columnar cilliated epi. with no cartilage plate in wall?
bronchiole
alveolus
bronchus
alv sac
bronchial septum

2)if the needle far posteriorly during inf. alv. nerve block injection, anesthesia of mandibular teeth will not occur, because needle has entered the

parotid gland
pterygoid space
inf. alv. canal
medial pterygoid muscle
sup. pharyngeal constrictor muscle


Thanks

 

[born to win]

1)which of foll. represents a segment of the bronchial tree tat is <1 mm in dia. and lined by simple columnar cilliated epi. with no cartilage plate in wall?
bronchiole
alveolus
bronchus
alv sac
bronchial septum

2)if the needle far posteriorly during inf. alv. nerve block injection, anesthesia of mandibular teeth will not occur, because needle has entered the

parotid gland
pterygoid space
inf. alv. canal
medial pterygoid muscle
sup. pharyngeal constrictor muscle


Thanks

1. Bronchiole

2. Parotid Gland

 

[pbkal]

1. The mandiublar condyle is covered with ....

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

articulating surface of condyle is covered by fibrocartialage and the non-articulating surface is covered by periosteum.

 

[pbkal]

EXTRACTION of 3 molar causes damage to which nerve
Answer: inferior alveolar nerve, lingual nerve..

what happens in a cell with decreased amount of citrate??

organisms commonly isolated from the corners of the mouth??

organisms isolated 4rm corners of mouth-candida.
confirm the right ans....

 

[pbkal]

Q2 Cause of periodontal disease
A. Shoveling trait in central incisor(which is that)pls mention this trait..
B. excessively long roots
C. excessively short roots
D. fused roots
E.projection

fused roots-ans

 

[shivG]

EXTRACTION of 3 molar causes damage to which nerve
Answer: inferior alveolar nerve, lingual nerve..😎

what happens in a cell with decreased amount of citrate?? vasoconstriction😕😕😕

organisms commonly isolated from the corners of the mouth??
candida👍

 

[jr8047]

can you tell where exactly it acts as reducing agent.thanks

vitamin c is found in citrus fruits..right? they are very acidic. So, they give Hydrogen atoms at every chance they can. Reducing is gain (re: OIL RIG oxidation is loss, reduction is gain?). so molecules obtain H atoms from vit c and become reduced thereby making vit c a reducing agent....make sense?

 

[KiTmAn]

EXTRACTION of 3 molar causes damage to which nerve
Answer: inferior alveolar nerve, lingual nerve..😎

what happens in a cell with decreased amount of citrate?? vasoconstriction😕😕😕

organisms commonly isolated from the corners of the mouth??
candida👍

CItrate is a potent inhibitor of glycolysis...Does that have nething to do with this? may be? not sure...someone confirm

 

[chipotle]

EXTRACTION of 3 molar causes damage to which nerve
Answer: inferior alveolar nerve, lingual nerve..

what happens in a cell with decreased amount of citrate??

organisms commonly isolated from the corners of the mouth??

if citrate decreases in the cell then oxaloacetate will convert to citrate faster and the cell cycle would progress furthur ...because finally citrate cycle has to Transfer 8 electrons from acetyl-CoA to the coenzymes NAD+ and FAD to form 3 NADH and 1FADH2 which are then re-oxidized by the electron transport chain to produce ATP by theprocess of oxidative phosphorylation. So if citrate level is already in excess why would the cell initiate TCA cycle furthur, it wud inhibit glycolysis itself ....So if citrate levels low cell needs to make more citrate by the conversion of oxaloacetate with acetyl coA.

 

[toothfairy482]

what about its relationship to glycolysis? would it increase glycolysis also?

if citrate decreases in the cell then oxaloacetate will convert to citrate faster and the cell cycle would progress furthur ...because finally citrate cycle has to Transfer 8 electrons from acetyl-CoA to the coenzymes NAD+ and FAD to form 3 NADH and 1FADH2 which are then re-oxidized by the electron transport chain to produce ATP by theprocess of oxidative phosphorylation. So if citrate level is already in excess why would the cell initiate TCA cycle furthur, it wud inhibit glycolysis itself ....So if citrate levels low cell needs to make more citrate by the conversion of oxaloacetate with acetyl coA.

 

[chipotle]

what about its relationship to glycolysis? would it increase glycolysis also?

nope .....glycolysis wudnt proceed furthur incase citrate is already available to the cell.

 

[toothfairy482]

no but glycolysis will increase if there is DECREASE in citrate...thats what i was saying...not increase if there is increased citrate.

nope .....glycolysis wudnt proceed furthur incase citrate is already available to the cell.

 

[molar9]

thats wht ciptole is saying😀

 

[gaya]

polymerisation of molecules into the collagen fibrils occurs in
1.ribosomes
2.RER
3.SER
4.extracellular space

 

[aphistis]

Q5 90:10 NO and Oxygen mixture is given to a patient causes respiratory depression to him.. Answer says its because of the respiratory acidosis. how??

Let's not overthink this, people. I bet if you really apply yourselves, you'll be able to figure out why someone breathing only 10% oxygen might be having respiratory problems.

 

[chipotle]

polymerisation of molecules into the collagen fibrils occurs in
1.ribosomes
2.RER
3.SER
4.extracellular space

Self-assembly or polymerization of tropocollagen molecules form collagen fibrils which occurs in the extracellular space.

 

[molar9]

chiptole👍

 

[shaby]

Q1- Optic nerve fibers from nasal half of the retina cross midline and enter the optic tract of the opposite side by way of the?
a- optic chiasma
c- bipolar cells of the retina

Q2- each of the following statements regarding the masseter muscle is correct except?
b- masseteric nerve reaches the masseter muscle by passing through the mandibular foramen
c- interdigitations of the masseter and medial pterygoid muscles form the pterygomandibular sling

Is anyone 100% positive of the answer to these two questions please?

 

[KiTmAn]

Q1- Optic nerve fibers from nasal half of the retina cross midline and enter the optic tract of the opposite side by way of the?
a- optic chiasma
c- bipolar cells of the retina

Q2- each of the following statements regarding the masseter muscle is correct except?
b- masseteric nerve reaches the masseter muscle by passing through the mandibular foramen
c- interdigitations of the masseter and medial pterygoid muscles form the pterygomandibular sling

Is anyone 100% positive of the answer to these two questions please?

1 - a
2 - c..
positive!

 

[KiTmAn]

what type of collagen makes up the DERMIS???

 

[aphistis]

1 - a
2 - c..
positive!

Fail. #2 is B, not C. Positive.