question

[jackcui]

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which of following is not correct about interleukins?

1. IL-5 is produced by activated T helper cells and mast cells.
2. IL-3 is secreted by T helper cells and mast cells.
3. IL-8 is secreted by monocytes and macrophages.
4. IL-10 is produced by activated T cells and mast cells
5. IL-7 is secreted by bone marrow stromal cells.

(reference from Kaplan Dent essentials:

IL-5 (source) TH2 cees
IL-3 TH cells, NK cells
IL-8 Macrophagess, endothelial cesss
IL-10 TH2 cells
IL-7 Primary lymph organs (so this one should be correct answer)?

Each of the following DNA virus encodes a DNA polymerase except one, which is this exception?

1. Hepatitis B virus(yes for polymerase)
2. SV40
3. Adneovirus (No)
4. EB Virus (No)
5. Poxvirus (yes for polymerase)

which one should be the right answer?

 

[jackcui]

Each of the following replicates their genome in the cytoplasm of infected cells except:
a. arenavirus
b. rabies
c. CMV (coz its a DNA virus which replicates in nucleus... rest are RNA viruses)
d. polio
e. measles
which of the following cell contains the most amount of RER?
a. small lymphocyte
b. osteocyte
c Macrophage
d. mesothelial cell
e. osteoblast (answer)
the mechnism of contraction in skeletal muscle is different from that of smooth muscle in which of the following ways?
a. source of Ca
b. role of Ca
c. source of energy
d. generation of force
e.nature of contractile proteins
each of the following vitamins requires phosphorylation for functionality except one.
a. lipoamide
b. riboflavin
c. pyridoxine
d. niacin
e. thiamine

 

[jackcui]

which of following organisms are the initial colonizers of the tooth surface?

A. Streptococcus salivaris, S. mitis, S. oralis
B. S. Mutans, S. Salivaris, S. oralis
C. S. Angiosus, S. Sanguis, S. Mutans
D. S. Sobrinus, S. mutans, S. angiosus
E. S. sanguis, S.Oralis, S. mutans.

Which of following transduction pathways is used to convey sweet taste upon stimuli:

A. Stimuli opens amilooride-sensitive ion channel,
B. Stimuli activates G protein receptor
C. Stimuli trigger Ca influx and neurotransmitter release
D. Stimuli activates phospholipases
E. Stimuli close amiloride-sensitive ion channels

 

[jackcui]

Non-working interferences usually occur between the inner aspect of the

A. Max. Lingual cusp and Man. Buccal cusp.
B. Max. BC & Man. LC
C.Max. LC and Man. LC
D.Max. BC and Man. BC

 

[morphology]

Non-working interferences usually occur between the inner aspect of the

A. Max. Lingual cusp and Man. Buccal cusp.
B. Max. BC & Man. LC
C.Max. LC and Man. LC
D.Max. BC and Man. BC

answer is B max BC & Mand LC, correct me if i am wrong.

 

[morphology]

which of following organisms are the initial colonizers of the tooth surface?

A. Streptococcus salivaris, S. mitis, S. oralis
B. S. Mutans, S. Salivaris, S. oralis
C. S. Angiosus, S. Sanguis, S. Mutans
D. S. Sobrinus, S. mutans, S. angiosus
E. S. sanguis, S.Oralis, S. mutans.

Which of following transduction pathways is used to convey sweet taste upon stimuli:

A. Stimuli opens amilooride-sensitive ion channel,
B. Stimuli activates G protein receptor
C. Stimuli trigger Ca influx and neurotransmitter release
D. Stimuli activates phospholipases
E. Stimuli close amiloride-sensitive ion channels

answer is E S. sanguis, S.Oralis, S. mutans.

 

[dreamchaser]

Which of following transduction pathways is used to convey sweet taste upon stimuli:

A. Stimuli opens amilooride-sensitive ion channel,
B. Stimuli activates G protein receptor
C. Stimuli trigger Ca influx and neurotransmitter release
D. Stimuli activates phospholipases
E. Stimuli close amiloride-sensitive ion channels

 

[jackcui]

A. Streptococcus salivaris, S. mitis, S. oralis
B. S. Mutans, S. Salivaris, S. oralis
C. S. Angiosus, S. Sanguis, S. Mutans
D. S. Sobrinus, S. mutans, S. angiosus
E. S. sanguis, S.Oralis, S. mutans.

Which of following transduction pathways is used to convey sweet taste upon stimuli:

A. Stimuli opens amilooride-sensitive ion channel,
B. Stimuli activates G protein receptor
C. Stimuli trigger Ca influx and neurotransmitter release
D. Stimuli activates phospholipases
E. Stimuli close amiloride-sensitive ion channels[/quote]

 

[jackcui]

Non-working interferences usually occur between the inner aspect of the

A. Max. Lingual cusp and Man. Buccal cusp.
B. Max. BC & Man. LC
C.Max. LC and Man. LC
D.Max. BC and Man. BC[/quote]

 

[jackcui]

a. the buccal developmental groove located more distally on 2nd maxillary molars the 1st maxillary molars;
b. the facial furcation is located rather apically on the 2nd maxillary molars than the 1st maxillary molars;
c. the lingual root of maxillary molars is mesiodistally wider than the maxillary 2nd and 3rd molars;
d. the greatest mesiodistal dimension of maxillary 1st molar is in the buccal aspect of the crown;
e. the oblique ridge is smaller on maxillary 2nd molars than the maxillary 1st molars.

 

[jackcui]

a, Slow and deep breathing pattern
b, residual volume is increased.
c, Functional residual capacity is increased.
d. tidal lung capacity is increased.

 

[jackcui]

The conformational stability of globular protein is most attributed to :
A. Disulphide bonds
B. Hydrogen bonds
C. Ionic interaction
D. Hydrophobic forces
E. Van der Waals forces

 

[jimrk120884]

which of the following is not true of permanent maxillary molars?
a. the buccal developmental groove located more distally on 2nd maxillary molars the 1st maxillary molars;
b. the facial furcation is located rather apically on the 2nd maxillary molars than the 1st maxillary molars;
c. the lingual root of maxillary molars is mesiodistally wider than the maxillary 2nd and 3rd molars;
d. the greatest mesiodistal dimension of maxillary 1st molar is in the buccal aspect of the crown;
e. the oblique ridge is smaller on maxillary 2nd molars than the maxillary 1st molars.

the mesiodistal dimension of max 1st molar is more palatally than buccally...
answer is D... correct me if i m wrong...

 

[jimrk120884]

1)Following peptide carries what charge in water at pH 7? Arg,leu,phe,lys,glu,gly

A 1
B 2
C 0
D -1
E -2

2)What is d net charge on glutamic acid at a pH of 1 ?
a. +2
b. +1
c. 0
d. - 1
e. -2

CAN ANYONE PLEASE CLARIFY HOW TO DEAL WITH THESE QUESTIONS INVOLVING THE pH OF THE AMINO ACIDS IN A SPECIFIC ENVIRONMENT...

3)whats the max no of AA that can be coded for a polynucleotide which contains only adenine,cytosine,uracil??
A 9
B 64
C 27
D 20
E 3
MY GUESS IS THE AMINO ACID IS CODED BY A TRIPLET CODON...
WHEN WE HAVE 4 NITROGEN BASES-----> WE CAN CODE 4^3 = 64 AMINO ACIDS
NOW IF WE HAVE ONLY 3 NITROGEN BASES ------> WE CAN CODE 3^3= 27 AMINO ACIDS...
PLEASE CORRECT ME IF I M WRONG....

4)Antisera to which of the following cell-surface molecules is able to detect all T lymphocytes?
(A) Anti-CD4
(B) Anti-CD8
(C) Anti-CD3
(D) Anti-Fab
(E) Anti-IgM

5)shortest root trunk

mesial of mand 1st
distal of mand 1st
mesial of mand 2nd
distal ' mand 2nd

HOW WOULD THERE BE MESIAL AND DISTAL ROOT TRUNKS WHEN THERE ARE ONLY 2 ROOTS IN MANDI MOLARS.... ISNT THERE ONLY ONE ROOT TRUNK BETWEEN THE MESIAL AND DISTAL ROOTS ? 😕

6)cutting the vagus and sympathetic supply to heart causes??

a. predominance of vagus over symp
b. " " of symp over vagus
c.both effects cancelled

 

[jackcui]

Following peptide carries what charge in water at pH 7? Arg,leu,phe,lys,glu,gly

A 1
B 2
C 0
D -1
E -2

I thinkat ph 7, Arg, +1, Lys +1, and Glu -1, others as leu ,phe and gly should be 0, so the sum will be 1,the answer should be A.

 

[jackcui]

the mesiodistal dimension of max 1st molar is more palatally than buccally...
answer is D... correct me if i m wrong...

Thanks, I always thought the widest aspet in buccal. now it is clear.

 

[missiondds]

a, slow and deep breathing pattern(answer)
b, residual volume is increased.
C, functional residual capacity is increased.
D. Tidal lung capacity is increased.

in copd esp emphysemsa the frc is increased/ dilatation n compliance of alveoli is increased .. Pt has diffiulty in expiration rather thn inspiration.

Pls post the asnwer

 

[missiondds]

1)Following peptide carries what charge in water at pH 7? Arg,leu,phe,lys,glu,gly

A 1
B 2
C 0
D -1
E -2

2)What is d net charge on glutamic acid at a pH of 1 ?
a. +2
b. +1
c. 0(Answer)
d. - 1
e. -2

CAN ANYONE PLEASE CLARIFY HOW TO DEAL WITH THESE QUESTIONS INVOLVING THE pH OF THE AMINO ACIDS IN A SPECIFIC ENVIRONMENT...

3)whats the max no of AA that can be coded for a polynucleotide which contains only adenine,cytosine,uracil??
A 9
B 64
C 27
D 20
E 3
MY GUESS IS THE AMINO ACID IS CODED BY A TRIPLET CODON...
WHEN WE HAVE 4 NITROGEN BASES-----> WE CAN CODE 4^3 = 64 AMINO ACIDS
NOW IF WE HAVE ONLY 3 NITROGEN BASES ------> WE CAN CODE 3^3= 27 AMINO ACIDS...
PLEASE CORRECT ME IF I M WRONG....

4)Antisera to which of the following cell-surface molecules is able to detect all T lymphocytes?
(A) Anti-CD4
(B) Anti-CD8
(C) Anti-CD3(answer)
(D) Anti-Fab
(E) Anti-IgM

5)shortest root trunk

mesial of mand 1st
distal of mand 1st
mesial of mand 2nd
distal ' mand 2nd

HOW WOULD THERE BE MESIAL AND DISTAL ROOT TRUNKS WHEN THERE ARE ONLY 2 ROOTS IN MANDI MOLARS.... ISNT THERE ONLY ONE ROOT TRUNK BETWEEN THE MESIAL AND DISTAL ROOTS ? 😕

6)cutting the vagus and sympathetic supply to heart causes??

a. predominance of vagus over symp
b. " " of symp over vagus(answer...coz muscarinic receptors arent present on ventricles... not sure pls post the answer)
c.both effects cancelled

 

[jackcui]

2)What is d net charge on glutamic acid at a pH of 1 ?
a. +2
b. +1
c. 0(Answer)
d. - 1
e. -2

I think it should be +1, since the pKa of glutamic is 4.1, in pH4.1 it should be 0, but below 4.1, it should be +1, avove 4.1 it should be -1.

please correct me if I am wrong

 

[jackcui]

3)whats the max no of AA that can be coded for a polynucleotide which contains only adenine,cytosine,uracil??
A 9
B 64
C 27
D 20
E 3
MY GUESS IS THE AMINO ACID IS CODED BY A TRIPLET CODON...
WHEN WE HAVE 4 NITROGEN BASES-----> WE CAN CODE 4^3 = 64 AMINO ACIDS
NOW IF WE HAVE ONLY 3 NITROGEN BASES ------> WE CAN CODE 3^3= 27 AMINO ACIDS...
PLEASE CORRECT ME IF I M WRONG....

You are right

 

[jackcui]

in copd esp emphysemsa the frc is increased/ dilatation n compliance of alveoli is increased .. Pt has diffiulty in expiration rather thn inspiration.

Pls post the asnwer

thanks, u r right.

 

[jackcui]

The conformational stability of globular protein is most attributed to :
A. Disulphide bonds
B. Hydrogen bonds
C. Ionic interaction
D. Hydrophobic forces
E. Van der Waals forces

D is the answer

 

[jimrk120884]

can u tell me how did u solve these amino acid charge questions...????🙁
i m really messed up with them...
actually i found those questions on a thread somewhere...cudnt really get wht d correct answer is...
but i ll believe u guys...

also the root trunk question...
is the question wrongly asked...?😕
i doubt so..please clarify...
i m not sure...

rest of the answers are correct...except the amino acid ones im not sure...

 

[missiondds]

can u tell me how did u solve these amino acid charge questions...????🙁
i m really messed up with them...
actually i found those questions on a thread somewhere...cudnt really get wht d correct answer is...
but i ll believe u guys...

also the root trunk question...
is the question wrongly asked...?😕
i doubt so..please clarify...
i m not sure...

rest of the answers are correct...except the amino acid ones im not sure...

)shortest root trunk

mesial of mand 1st
distal of mand 1st
mesial of mand 2nd
distal ' mand 2nd

HOW WOULD THERE BE MESIAL AND DISTAL ROOT TRUNKS WHEN THERE ARE ONLY 2 ROOTS IN MANDI MOLARS.... ISNT THERE ONLY ONE ROOT TRUNK BETWEEN THE MESIAL AND DISTAL ROOTS ?


the answer to this question could be the mesial mand 1m but on the lingual side..

actually the intent of this question could be bout he cej which affects the root trunk. since the cej is more cervically placed on the lingual of mand 1m thn on the labial of mand 1m , the lingual side root trunk is smaller thn bucall aspect.

mesial of mand 1m has most cervical curvature whn compared to distal, u can check the cej curvature measurment for such question.... (wheelers)

 

[jackcui]

A: Discal Ligment
B: Stylohyoid ligment
C: Temoromandibular ligment
D: Stylomandibular ligment
E: Capsular ligment

 

[jackcui]

A. Oral hairy leukoplakia
B. Herpetic infections
C. Candidiasis
D. Kaposi's sarcoma
E. Mucormycosis

 

[aim high]

An accessory ligment of the TMJ is the
A: Discal Ligment
B: Stylohyoid ligment
C: Temoromandibular ligment
D: Stylomandibular ligment-----answer
E: Capsular ligment

 

[aim high]

which of following is NOT a typical finding in AIDS patient
A. Oral hairy leukoplakia
B. Herpetic infections
C. Candidiasis
D. Kaposi's sarcoma
E. Mucormycosis -------answer

plz confirm this

 

[jackcui]

An accessory ligment of the TMJ is the
A: Discal Ligment
B: Stylohyoid ligment
C: Temoromandibular ligment
D: Stylomandibular ligment-----answer
E: Capsular ligment

Right, can you explain why? The C and D as well as sphenomandibular ligmant are 3 main extracapsular ligmants, why only sytylomandibular is thought to be the accessory ligment?

 

[jackcui]

which of following is NOT a typical finding in AIDS patient
A. Oral hairy leukoplakia
B. Herpetic infections
C. Candidiasis
D. Kaposi's sarcoma
E. Mucormycosis -------answer

plz confirm this

right answer. still a little bit confused about this question.

 

[morphology]

GABA increases the permeability of postsynaptic membrane to which of the following?
a. sodium
b. calcium
c. chloride----answer
d. magnesium
e. potassium

answer is chloride, but i have doubt that there are two types.
GABA A: incre permeability of chloride
GABA B: icreas permeability of potassium.

which one is the answer?😕

 

[aim high]

Right, can you explain why? The C and D as well as sphenomandibular ligmant are 3 main extracapsular ligmants, why only sytylomandibular is thought to be the accessory ligment?

actly this point is mentioned in dental decks..
fibrous capsule which encloses the joint is made up of inner synovial memb and outer fibrous layer which gives rise to accessory ligs( both spenomand lig and stylomand lig are accessory ligaments).
fibrous capsule laterally thickens to form tempmand lig.

hope its clear now.

 

[aim high]

which of following is NOT a typical finding in AIDS patient
A. Oral hairy leukoplakia
B. Herpetic infections
C. Candidiasis
D. Kaposi's sarcoma
E. Mucormycosis -------answer

because we already know that AIDS is associated with immune compromised pts..hence can have oral hairy leukplakia,karposi sarcoma,candidiasis.

i think herpetic is also associated with AIDS as it can be sexually transmitted.

we r left with mucormycosis which mostly associated with mostly with diabetics..hence i choose the answer.

 

[jackcui]

which of following is NOT a typical finding in AIDS patient
A. Oral hairy leukoplakia
B. Herpetic infections
C. Candidiasis
D. Kaposi's sarcoma
E. Mucormycosis -------answer

because we already know that AIDS is associated with immune compromised pts..hence can have oral hairy leukplakia,karposi sarcoma,candidiasis.

i think herpetic is also associated with AIDS as it can be sexually transmitted.

we r left with mucormycosis which mostly associated with mostly with diabetics..hence i choose the answer.

Thanks!

 

[missiondds]

A. Oral hairy leukoplakia
B. Herpetic infections(answer..)
C. Candidiasis
D. Kaposi's sarcoma
E. Mucormycosis[/QUOTE

isnt mucormycosis common n exxagareted in aids??

 

[jackcui]

which of the following will be released if there is a deficiency in dietary iodine?

A. Triiodothyroxine
B. Thyroglobin
C. Thyroxine
D. Thyroid stimulating hormone
E. Thyrotropin

 

[jackcui]

the above question is absurd.

TSH and thyrotropin is same thing.

thyrotropin

The Columbia Encyclopedia, Sixth Edition

thyrotropin or thyroid-stimulating hormone (TSH), hormone released by the anterior pituitary gland that stimulates the thyroid gland to release thyroxine . The release of thyrotropin is triggered by the action of thyrotropin-releasing factor (TRF), a substance found in the hypothalamus of the brain. TRF, once released from the hypothalamus, travels in the bloodstream to the anterior pituitary, where it causes the release of thyrotropin. This latter substance, a glycoprotein (see protein ), is carried to the thyroid gland by the blood, where it stimulates the uptake of iodine, the conversion of diiodotyrosine to thyroxine, and the secretion of thyroid hormones into the bloodstream. Thyroxine inhibits the further release of thyrotropin by interfering with the action of TRF; thus the levels of thyroid hormones are regulated. If not enough iodine is available in the diet, then not enough thyroxine will be made to shut off the release of thyrotropin. Prolonged stimulation of the thyroid by thyroid-stimulating hormone results in an abnormal enlargement of the gland, known as goiter, a condition which has been largely eradicated by the widespread usage of iodized salt.

Author not available, THYROTROPIN., The Columbia Encyclopedia, Sixth Edition 2008

 

[seemabhatara]

thyroglobulin increases in iodine deficiency

 

[missiondds]

cutting the vagus and sympathetic supply to heart causes??

a. predominance of vagus over symp
b. " " of symp over vagus(answer...coz muscarinic receptors arent present on ventricles... not sure pls post the answer)
c.both effects cancelled
missiondds is offline Reply With Quote


sympathetic effect ll dominate vagus coz vagus doesnt supply the ventricles.

 

[jackcui]

thyroglobulin increases in iodine deficiency

The answer for yhat question is D, I think itis absurd because D and E is samething.

 

[seemabhatara]

The answer for yhat question is D, I think itis absurd because D and E is samething.

but its givn in txts tht thyroglobulin levels are more sensitive in iodine def (TSH do rise bt more appropriate to mrk is thyroglobulin)n since in Q TSH n thyrotropin are givn which means sme thing cant b the ans.........
i hve dne ths q bt in my key ans is thyroglobulin

 

[jackcui]

but its givn in txts tht thyroglobulin levels are more sensitive in iodine def (TSH do rise bt more appropriate to mrk is thyroglobulin)n since in Q TSH n thyrotropin are givn which means sme thing cant b the ans.........
i hve dne ths q bt in my key ans is thyroglobulin

Thanks. maybe you r right. it is said that the crack of NBDE has a lot of mistakes.

 

[seemabhatara]

sweat glands have M RECEPTORS but what about errector pilli ??

 

[morphology]

sweat glands have M RECEPTORS but what about errector pilli ??

The Arrectores pilorum are controlled by the sympathetic nervous system which is in general responsible for many fight-or-flight responses.

also they are attached to the hair follicles, which is controlled by hair follicle receptor.

 

[seemabhatara]

The Arrectores pilorum are controlled by the sympathetic nervous system which is in general responsible for many fight-or-flight responses.

also they are attached to the hair follicles, which is controlled by hair follicle receptor.

m nt clear abt wt type of recptor r there like alpha 1 or alpha2 or beta1or beta2 or muscarinic..........

i knw symp causes goose flesh bt wt receptor n neurotransmittr responsible 4 it???😕

 

[morphology]

m nt clear abt wt type of recptor r there like alpha 1 or alpha2 or beta1or beta2 or muscarinic..........

i knw symp causes goose flesh bt wt receptor n neurotransmittr responsible 4 it???😕

it is alpha 1 receptor. check on-
http://en.wikipedia.org/wiki/Adrenergic_receptor

 

[jackcui]

abused children come from

a.upper class families
b.working class families
c.economically deprived families
d.all socio-economic,ethnic and cultural backgrounds

 

[seemabhatara]

a hyperthyroid female complains of bilateral pain in tmj on closing.which of followin will b increasd in this pt

a) increasd renal excretion
b)increasd intestinal Ca absorption

 

[jackcui]

a hyperthyroid female complains of bilateral pain in tmj on closing.which of followin will b increasd in this pt

a) increasd renal excretion
b)increasd intestinal Ca absorption




The thyroid hormone increases body requirement of vitamins. Therefore, a relative vitamin deficiency may occur in hyperthyroidism. When Vitamin D deficiency, the renal excretion will increase and absobption will decrease.

 

[seemabhatara]

a hyperthyroid female complains of bilateral pain in tmj on closing.which of followin will b increasd in this pt

a) increasd renal excretion
b)increasd intestinal Ca absorption




The thyroid hormone increases body requirement of vitamins. Therefore, a relative vitamin deficiency may occur in hyperthyroidism. When Vitamin D deficiency, the renal excretion will increase and absobption will decrease.

sry q was female is hyperparathyroid

PTH CAUSES INCREASD INTESTINAL ABSORPTION OF Ca due to increasd active vit d so isnt tht in hperparathyroid state more intestinal absorption of Ca will occur????

 

[jackcui]

sry q was female is hyperparathyroid

PTH CAUSES INCREASD INTESTINAL ABSORPTION OF Ca due to increasd active vit d so isnt tht in hperparathyroid state more intestinal absorption of Ca will occur????

Yes. u r right.
B. Parathyroid Hormone (PTH)
1. PTH is produced and secreted by the parathyroid glands. It contains 84 amino acids, but a chain of 34 amino acids adjacent to the N terminus of the hormone exhibits the whole PTH activity.
2. The parathyroids secrete PTH in response to a decrease in calcium ion concentration in the extracellular fluid (hypocalcemia). Parathyroid glands enlargement occurs under conditions of their prolonged stimulation (rickets, pregnancy, and lactation). Conditions associated with increased calcium ion concentration (enhanced vitamin D and/or calcium intake, bone absorption, which does not result from PTH action) cause decreased activity and reduced size of the glands. Mild decrease in serum Mg2+ level stimulates PTH secretion while severe decrease inhibits PTH secretion and produces symptoms of hypoparathyroidism.
3. PTH causes an increase in calcium ion concentration in the extracellular fluid and a decrease in phosphate level. These effects result from PTH action on three target organs: bone, kidney, and intestine. The last effect is indirect; PTH increases formation of the active form of vitamin D, which promotes calcium and phosphate absorption by the intestines.
4. PTH increases bone resorption:
1 The first (rapid) phase results from activation of already existing bone cells (the osteocytic membrane system) and absorption of calcium phosphate salts from amorphous compounds without resorption of the organic matrix (osteolysis).
2 The second phase results from activation of the osteoclastic system. The proteolytic enzymes and acids released from the osteoclasts cause reabsorption of the bone itself, which is reflected by increased hydroxyproline excretion in the urine.
3 Alone, these effects would not increase the ionized calcium in the plasma, because phosphate complexes with calcium ions.
4 In the kidneys, PTH increases the reabsorption of calcium, mainly in the distal tubules, the collecting tubules, the early collecting ducts, and possibly, the ascending loop of Henle. PTH inhibits the reabsorption of phosphate in the early proximal tubules thus increasing phosphate excretion (a phosphaturic effect).