question

[jackcui]

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?

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[jackcui]

which of the following surfaces is caries most likely to occur?
(a) The facial surfaces of permanent maxillary first molars
(b) The lingual surfaces of permanent maxillary first molars
(c) The facial surfaces of permanent mandibular first molars
(d) The lingual surfaces of permanent mandibular first molars
1. (a) and (c)
2. (a) and (d)
3. (b) and (c) only
4. (b), (c), and (d)
5. (b), and (d) only​

 

[jackcui]

When occlusal relationships are norma,, which portions of the mandibular molars have potential for contacting antagonists during the eccentric movements of the mandible?
(a) The outer aspects of the buccal cusps
(b) The inner aspects of the buccal cusps
(c) The outer aspects of the lingual cusps
(d)The inner aspects of the lingual cusps
1. (a) and (b) only
2. (a), (b), and (d) only
3. (b) and (d) only
4. (c) and (d) only
5. (a), (b), (c), and (d)​

 

[morphology]

which of the following surfaces is caries most likely to occur?
(a) The facial surfaces of permanent maxillary first molars
(b) The lingual surfaces of permanent maxillary first molars
(c) The facial surfaces of permanent mandibular first molars
(d) The lingual surfaces of permanent mandibular first molars
1. (a) and (c)
2. (a) and (d)
3. (b) and (c) only
4. (b), (c), and (d)
5. (b), and (d) only​

ans--3 b and c

 

[jackcui]

3 if V nerve is cut below medulla what happens
a loss of sensation of pain same side
b loss of sensation of pain ipsilateral
c loss of propriocepion same side
d loss of sensation of propriception opposite side

 

[d dimps]

3 if V nerve is cut below medulla what happens
a loss of sensation of pain same side
b loss of sensation of pain ipsilateral
c loss of propriocepion same side
d loss of sensation of propriception opposite side

Ans:b

 

[gaya]

each of the followin g can cause renal glucosuria except .
1.low insulin level
2.high blood sugar level
3.high renal threshold for glucose
4.imparied tubular reabsorption of glucose
5.high gfr

 

[gaya]

in the aqueous solution at ph 7,a peptide containing 1 amino side chain and 2 carboxyl chainwould have which of the following net charge
1.2+
2.1+
3.0
4.1-
5.2-
please explain the ans

 

[dental material]

39. In a right lateral excursion, the mesiofacial cusp of the maxillary right first molar passes through which of the following grooves of the mandibular right first molar?

1. Lingual groove
2. Central groove
3. Facial groove
4. Distofacial groove​

I think the right answer should be the mesial facial groove of the 1st mandibular, right? But the key given to the answer is 1, lingual groove, why?

Yeah it should be 3 [ facial groove]

 

[dental material]

On the occlusal surface of a maxillary molar, the groove that representt the working path of the distofacial cusp of the mandibular molar is the

1. central groove.
2. facial groove.
3. lingual groove.
4. distal oblique groove.

5. transverse groove of the oblique ridge.​

ans 2 facial groove

 

[dental material]

Salivary gland striated ducts are composed of which of Ihe following types of epithelium?

A Simple squamous
B. Simple cuboids I
C. Stratified squamous
D. Simple low columnular
E. Psuedotratified ciliated columnar​

please choose from these 2 choices​

is ans D

 

[jackcui]

in the aqueous solution at ph 7,a peptide containing 1 amino side chain and 2 carboxyl chainwould have which of the following net charge
1.2+
2.1+
3.0
4.1-
5.2-
please explain the ans

1 amino= +1, 2 carboxyl= -2, so , sum is -1
answer is 4

 

[jackcui]

each of the followin g can cause renal glucosuria except .
1.low insulin level
2.high blood sugar level
3.high renal threshold for glucose
4.imparied tubular reabsorption of glucose
5.high gfr

answer 3

 

[jackcui]

is ans D

right!

 

[gaya]

the pH of the solution having an 10-5M conc of the oH- ion is
1.5
2.9
3.7.
please explain

 

[jackcui]

the pH of the solution having an 10-5M conc of the oH- ion is
1.5
2.9
3.7.
please explain

the answer is 2, 9

pH= -log[H]
pOH=-log[OH]. so in this question, pOH=-log[10-5]=5
pH+pOH=14
so pH=14-pOH =14-5=9

 

[missiondds]

in the aqueous solution at ph 7,a peptide containing 1 amino side chain and 2 carboxyl chainwould have which of the following net charge
1.2+
2.1+
3.0
4.1-
5.2-
please explain the ans

answer is -2

 

[jackcui]

answer is -2

how so? can you explain?

 

[jilesh]

Ans: 1) facial to the center of root.

ans is 3) acc to released paper...

 

[jimrk120884]

A. proximal convoluted tubule
B. ascending loop of Henle
C. descending loop of Henle
D. collecting ducts

 

[morphology]

A. proximal convoluted tubule
B. ascending loop of Henle
C. descending loop of Henle
D. collecting ducts

answer- c descending loop of henle

 

[UDUSA]

When occlusal relationships are norma,, which portions of the mandibular molars have potential for contacting antagonists during the eccentric movements of the mandible?​

(a) The outer aspects of the buccal cusps
(b) The inner aspects of the buccal cusps
(c) The outer aspects of the lingual cusps
(d)The inner aspects of the lingual cusps
1. (a) and (b) only
2. (a), (b), and (d) only
3. (b) and (d) only
4. (c) and (d) only​

5. (a), (b), (c), and (d)

Answer is--2
During man movements(workin or non-workin) choice(c) will not contact their max antago.., all other areas of buccal n lingual cusps MAY contact during man movements

 

[UDUSA]

DECKS says--
-In workin side movement (rt/lf) MB cusp of max 1stM pass thr LINGUAL groove of man 1stM

- In workin side movement(rt/lt) MB cusp of max 2ndM " BUCCAL groove of man 2ndM

How can both these be correct??

 

[UDUSA]

39. In a right lateral excursion, the mesiofacial cusp of the maxillary right first molar passes through which of the following grooves of the mandibular right first molar?

1. Lingual groove
2. Central groove
3. Facial groove
4. Distofacial groove​

I think the right answer should be the mesial facial groove of the 1st mandibular, right? But the key given to the answer is 1, lingual groove, why?

This could be better explained if we go according to DECKS, it says,
In workin side movement(rt/lf) MB cusp of max 1stM pass thr LINGUAL groove of man 1stM

 

[UDUSA]

Occlusocervically, the height of the mesial marginal ridge of a permanent mandibular first molar is the same as the height of the

1. triangular ridge of the mesiofacial cusp of a mandibular first molar.
2. triangular ridge of the distofacial cusp of a mandibular first molar.
3. distal marginal ridge of a mandibular first molar.
4. mesial marginal ridge of a mandibular second molar.​

5. distal marginal ridge of a mandibular second premolar​

Answer-5 (since 2 adjacent marginal ridges are always of the same height)

 

[UDUSA]

32. When viewing a maxillary central incisor from the mesial aspect, one normally finds the incisal ridge of the crown

1. facial to the center of the root.
2. lingual to the center of the root.
3. on line with the center of the root.

4. in variable positions​

Answer should be (3) since we are asked about the incisal ridge in terms of the tooth itself and not how it looks when placed in the arch( answer to which could be (1), ie the axial inclination of the tooth)

 

[UDUSA]

The design of a restored occlusal surface is dependent upon the

(a) contour of the articular eminence.
(b) position of the tooth in the arch.
(c) amount of lateral shift in the rotating condyle.
(d) amount of vertical overlap of anterior teeth.​

A. (a) and (c) only

B. (b), (c), and (d) only

C. (b) and (d) only
D. (c) and (d) only
E. (a), (b), (c), and (d)​

According to decks ALL FOUR are the theoretical determinants needed for restoring occ surface, but few papers say ans-(a)

 

[aim high]

1 amino= +1, 2 carboxyl= -2, so , sum is -1
answer is 4

agree with the answer.

 

[dental material]

DECKS says--
-In workin side movement (rt/lf) MB cusp of max 1stM pass thr LINGUAL groove of man 1stM

- In workin side movement(rt/lt) MB cusp of max 2ndM " BUCCAL groove of man 2ndM

How can both these be correct??

Please dental decks correcetion

 

[dental material]

agree with the answer.

will be very obligued if u can explain this

 

[dental material]

When occlusal relationships are norma,, which portions of the mandibular molars have potential for contacting antagonists during the eccentric movements of the mandible?

(a) The outer aspects of the buccal cusps
(b) The inner aspects of the buccal cusps
(c) The outer aspects of the lingual cusps
(d)The inner aspects of the lingual cusps
1. (a) and (b) only
2. (a), (b), and (d) only
3. (b) and (d) only
4. (c) and (d) only

5. (a), (b), (c), and (d)​

is the ans 1

 

[UDUSA]

is the ans 1

Nope, its choice 2

 

[UDUSA]

Please dental decks correcetion

Do you mean that DECKS need to be corrected? I am confused..

 

[dreamchaser]

Do you mean that DECKS need to be corrected? I am confused..

http://www.dentaldecks.com/pages/morecorrections .aspx

 

[UDUSA]

http://www.dentaldecks.com/pages/morecorrections .aspx

Hey thankyou so much for the link, it was helpfull

 

[dental material]

1] In resting state in man , air diff. b/w O2 content of arterial and venous blood is?
a] 2vol%
b] 5vol%
c]10%
d] 25%

2] Fenestrated artery in PDL is ?

 

[UDUSA]

Aspiration of decayed material form carious teeth may cause?
-lobar pneumonia
-broncho "
-interstial "
-Lung abscess
-TB

(I think both bronchopneumonia n lung abscess can be caused by ASPIRATION...)Please clear my doubt with expl.

 

[jimrk120884]

Rheumatic fever can be a sequlae of which of the following streptococcal infections?

A. Pyoderma
B. Diphtheria
C. Scarlet fever
D. Dental caries
E. Streptococcal gangrene

 

[UDUSA]

Rheumatic fever can be a sequlae of which of the following streptococcal infections?

A. Pyoderma
B. Diphtheria
C. Scarlet fever
D. Dental caries
E. Streptococcal gangrene

C-scarlet fever(caused by Strep Pyogenes)

 

[UDUSA]

Facilitated diffusion differs forn active transport in that the net transport by facilitated diffusion-
a- has a transport maximum
b-uses ATP as energy source
c-requires concentrate gradient

The answer key is-(c) requires con gradient

But the facilitated diffusion also has a transport maximum,right?(since it requires protein receptors, which cant transport more than the no of receptors present )

 

[UDUSA]

Action potential initiated at the midpoint of an axon will ...
1)propagate towards nerve soma
2) " " " ending
3) " " soma n nerve ending.
Answer key is 3

(Does this q relate to propagation of impulse in-Vivo or in-Vitro? )

 

[jimrk120884]

medulla of lymph node is functionally analogus to which part of spleen?
a. red pulp
b. white pulp

 

[aim high]

Aspiration of decayed material form carious teeth may cause?
-lobar pneumonia
-broncho "
-interstial "
-Lung abscess---ANSWER
-TB
---etiology of broncho pneumonia is mostly microorgns such as strep pneumonia,H.influenza and etiology of lung abscess is aspiration.

 

[aim high]

medulla of lymph node is functionally analogus to which part of spleen?
a. red pulp
b. white pulp

answer---b white pulp

 

[aim high]

Facilitated diffusion differs forn active transport in that the net transport by facilitated diffusion-
a- has a transport maximum
b-uses ATP as energy source
c-requires concentrate gradient

The answer key is-(c) requires con gradient

But the facilitated diffusion also has a transport maximum,right?(since it requires protein receptors, which cant transport more than the no of receptors present )

---answer is C coz facilitated transport requires concgradiant for transport but active transport can be against concgradient.

transport max is not answer coz both facilitated n active transport are protein mediated transports.

 

[aim high]

A. proximal convoluted tubule
B. ascending loop of Henle
C. descending loop of Henle
D. collecting ducts

answer B ascending loop of henle..as its not permeable to water ..its hyperosmolar part of nephron.

 

[aim high]

In resting state in man , air diff. b/w O2 content of arterial and venous blood is?
a] 2vol%
b] 5vol%
c]10%
d] 25%

answer--1.Assuming a hemoglobin concentration of 15g/dl and an oxygen saturation of 99%, the oxygen content of arterial blood is approximately 200ml of O2 per litre.

The saturation of mixed venous blood is approximately 75% in health. the oxygen content of mixed venous blood is approximately 150ml of O2 per litre.

i got this above info from wikipedia---.hence diff is 200-150=50 ml o2 per liter...if we convert to vol percentage it might be 5vol%..


2] Fenestrated artery in PDL is ?

answer---fenestrated arteries are actly with small holes in their wall to allow few macro molecules into them.
and peridontal ligaments of ant teeth supplied by incisive artery br of inf alveolar artery which inturn branch of max artery..inferior alveolar artery when travelling thru mand foramen gives dental arteries to pdl n roots of premolars n molars...so i think the answer shud be inferior alveolar artery or maxillary artery dependin on options...

any more inputs?

 

[morphology]

In resting state in man , air diff. b/w O2 content of arterial and venous blood is?
a] 2vol%
b] 5vol%
c]10%
d] 25%

answer--1.Assuming a hemoglobin concentration of 15g/dl and an oxygen saturation of 99%, the oxygen content of arterial blood is approximately 200ml of O2 per litre.

The saturation of mixed venous blood is approximately 75% in health. the oxygen content of mixed venous blood is approximately 150ml of O2 per litre.

i got this above info from wikipedia---.hence diff is 200-150=50 ml o2 per liter...if we convert to vol percentage it might be 5vol%..


2] Fenestrated artery in PDL is ?

answer---fenestrated arteries are actly with small holes in their wall to allow few macro molecules into them.
and peridontal ligaments of ant teeth supplied by incisive artery br of inf alveolar artery which inturn branch of max artery..inferior alveolar artery when travelling thru mand foramen gives dental arteries to pdl n roots of premolars n molars...so i think the answer shud be inferior alveolar artery or maxillary artery dependin on options...

any more inputs?

can u pls explain how did u count?
because i used that formula but i didn't get 200 ml.
thanks.

 

[aim high]

can u pls explain how did u count?
because i used that formula but i didn't get 200 ml.
thanks.

actly i didnt do the calculation..it was given the following link

http://en.wikipedia.org/wiki/Fick_principle

may be the caculation is just approximated..any suggestions.

 

[morphology]

actly i didnt do the calculation..it was given the following link

http://en.wikipedia.org/wiki/Fick_principle

may be the caculation is just approximated..any suggestions.

ya i opened the same link but i didn't get the answer
anyway thanks a lot.

 

[morphology]

answer B ascending loop of henle..as its not permeable to water ..its hyperosmolar part of nephron.

answer should be descending loop because it is impermeable to Na, so it is not reabsorbed and h2o is reabsorbed in descending loop. so it is hyper osmotic.
pls clear the doubt.