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]

1 Integration of F factor plasmid into the chromosome
-is essential in order for the chr to b transferred during conjugation
-is essential in order for the F factr to b transfrd during conjugation
-leads to formation of f pill (The Fertility factor (also known as F factor or sex factor) is a bacterialDNA sequence that allows a bacterium to produce a sex pilus necessary for conjugation.)
-produces the mutation

2 which of the following statements best describes the bacterial transformation
- DNA coding for RNA synthesis
-RNA coding for protein synthesis
-aquisition of an inheritable trait by bact mediated by DNA
-aquisition of an inheritable trait by bact mediated by RNA
-binding of 3oS & 70S ribosomes

 

[missiondds]

1 Integration of F factor plasmid into the chromosome
-is essential in order for the chr to b transferred during conjugation
-is essential in order for the F factr to b transfrd during conjugation
-leads to formation of f pill(answer)
-produces the mutation

2 which of the following statements best describes the bacterial transformation
- DNA coding for RNA synthesis
-RNA coding for protein synthesis
-aquisition of an inheritable trait by bact mediated by DNA(answer)
-aquisition of an inheritable trait by bact mediated by RNA
-binding of 3oS & 70S ribosomes

where did u find these questions frm?

 

[missiondds]

3. Cellular tropism of viruses is dependent on which of the following
- host cell DNA homology to viral DNA(not necessarily...)
-temp of host cell incubation
-gamma interferon production
-cell surface receptors answer...( viruses need receptors to enter the cells)
-viral enzymes synthesis( viruses already have enzymes.. so invivo they do not synthesize enzymes..

4. calcium dipicolinate is present in large amt in
-flagella
-mesosomes
-ribosomes
-granular inclusions(answer) atually CD IS PRESENT IN ENDOSPORES... CERTAINLY NOT IN MESOSOMES OR RIBOSOMES. FLAGELLA HAVE MICROTUBLES

5. staph aureus most commonly causes
-septicimea
-sore throat
-chr infections
-exogenous infections

(answer)
5-d... exogenous infections

whr did u find these question?

 

[dental material]

COZ ionizing radiations can lead to free radical formation so do chemicals/corrosives/ /oxidative elements. however i dont think there is any thing like physical agent responsible for radical formation.let me know if i m right.

Thanks for the answers . Even i do think physical agent dont produce radicals.

 

[jackcui]

3. Cellular tropism of viruses is dependent on which of the following
- host cell DNA homology to viral DNA
-temp of host cell incubation
-gamma interferon production
-cell surface receptors
-viral enzymes synthesis

4. calcium dipicolinate is present in large amt in
-flagella
-mesosomes
-ribosomes
-granular inclusions (calcium dipicolinate is in the endospores )

5. staph aureus most commonly causes
-septicimea
-sore throat
-chr infections
-exogenous infections

 

[jackcui]

. The drawing to the right illustrates a cross section at the cementoenamel junction. This section is typical of which of the following teeth?

A. maxillary first premolar
B. mandibular second premolar
C. maxillary molar
D. mandibular molar

 

[jackcui]

The most important mediator of delayed type hypersensitivity in TB is:
A. IFN-gamma
B. IL-2
C. lymphotoxin
D. IL-12
E. TNF-2

which of the following is mostly to give rise to a lymphoma in the oral cavity:
A. pharynx and palate
B. tonsils and floor of mouth
C. nasopharynx and tonsil
D. nasal cavity and maxillary sinus
E. maxillary sinus and nasopharynx

 

[missiondds]

. The drawing to the right illustrates a cross section at the cementoenamel junction. This section is typical of which of the following teeth?

A. maxillary first premolar
B. mandibular second premolar
C. maxillary molar
D. mandibular molar

maxillary molar(ANSWER)


pls post the answer.. USUALLY PPL POST THE QUESTION BUT DO NOT POST THE ANSWER....

 

[missiondds]

Thanks for the answers . Even i do think physical agent dont produce radicals.

where did u find this question and is the answer correct?

 

[missiondds]

the most important mediator of delayed type hypersensitivity in tb is:
A. Ifn-gamma(answer) responsible for activation of cd8 t cells and macrophages. Activated macrophages relaease tnfalpha and other cytokines causing multinucleated cell formation n activation of cytotoxic cd8 t cells in turn.
B. Il-2
c. Lymphotoxin
d. Il-12
e. Tnf-2

which of the following is mostly to give rise to a lymphoma in the oral cavity:
A. Pharynx and palate
b. Tonsils and floor of mouth
c. Nasopharynx and tonsil(answer...coz adenoid tonsil is post wall of nasopharynx while tonsil which implies palatine tonsil btwn platatoglossal and paltophyryngeal fauces are the only major lymphoid tissue. Lingual tonsils are minor...) .. Nasal cavity/max sinus/ arent a part of oral cavity...
D. Nasal cavity and maxillary sinus
e. Maxillary sinus and nasopharynx

guys pls post the answer to question irrespective of the source of question.

 

[jackcui]

coronal cementum in human teeth can be best described as:

a. cellular with intrinsic and extrinsic fibers
b. cellular with intrinsic fibers
c. cellular with extrinsic fibers
d. acellular with extrinsic fibers
e. acellular and afibrilar

The primary center in the ossification of the mandibular in the six week of the fetal life is the

a. mental foramen
b. condyloid process
c. mandibular foramen
d. coronoid process
e. lingula

 

[jackcui]

chemotherapeutic drugs are important to cells in which of the following cell cycles
a. G1
b. G2
c. G0
d. S
e. M

each of the following vitamins requires phosphorylation for functionality except one.

a. lipoamide
b. riboflavin
c. pyridoxine
d. niacin
e. thiamine

 

[jackcui]

which of the following cell contains the most amount of RER?
a. small lymphocyte
b. osteocyte
c Macrophage
d. mesothelial cell
e. osteoblast

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

 

[jackcui]

The most important mediator of delayed type hypersensitivity in TB is:
A. IFN-gamma
B. IL-2
C. lymphotoxin
D. IL-12
E. TNF-2

which of the following is mostly to give rise to a lymphoma in the oral cavity:
A. pharynx and palate
B. tonsils and floor of mouth
C. nasopharynx and tonsil
D. nasal cavity and maxillary sinus
E. maxillary sinus and nasopharynx

 

[jackcui]

which of the following viruses most commonly associated with aseptic meningitis

a. coxsackie
b. influenza
c. EBV
d. CMV
e. measles

Each of the following replicates their genome in the cytoplasm of infected cells except:
a. arenavirus
b. rabies
c. CMV
d. polio
e. measles

 

[dental material]

where did u find this question and is the answer correct?

This question was asked to me by my friend and even i dont know asnwer, i can just make educate guess as - physical

 

[jackcui]

where is most susceptible for a malignant lymphoma

a. duodenum
b. colon
c. ilium
d. stamach
e. esophagus

which of the following components of S.Pnuemoniae renders it to be resistant to phagocytosis from host cell?
a. capsular polysaccharide
b. m protein
c. LPS
d. cell wall
e. IgA protease

where is likely to give rise an oral squamous carcinoma?
a. vlveolar ridge and gingiva
b. mucubuccal fold and buccal mucosa
c. floor of the mouth and lateral tongue
d. labial commissure
e. soft palate and lip

 

[jackcui]

the Cl-HCO3 transportor system found in the erythrocyte membrane is a type of:
A. symport transport(TP)
B. facilitated TP,
c. passive difussion
d. active TP
e. uniport TP

Protiein is heated until it denatures, which of the following bond types is still intact:
a. hydrophobis
b. Van der Waals
c. Hydrogen
d. disufide
e. electrostatic

which of following mechanisms does not directly involve DNA methylation
A. SOS response
B. Mismatch repair
C. protection against restriction enzyme
D. methyl transferase repair

 

[dreamchaser]

where is most susceptible for a malignant lymphoma

a. duodenum
b. colon
c. ilium
d. stamach
e. esophagus

which of the following components of S.Pnuemoniae renders it to be resistant to phagocytosis from host cell?
a. capsular polysaccharide
b. m protein
c. LPS
d. cell wall
e. IgA protease

where is likely to give rise an oral squamous carcinoma?
a. vlveolar ridge and gingiva
b. mucubuccal fold and buccal mucosa
c. floor of the mouth and lateral tongue
d. labial commissure
e. soft palate and lip

Protiein is heated until it denatures, which of the following bond types is still intact:
a. hydrophobis
b. Van der Waals
c. Hydrogen
d. disufide
e. electrostatic

the Cl-HCO3 transportor system found in the erythrocyte membrane is a type of:
A. symport transport(TP)
B. facilitated TP,
c. passive difussion
d. active TP
e. uniport TP

which of the following viruses most commonly associated with aseptic meningitis

a. coxsackie
b. influenza
c. EBV
d. CMV
e. measles
which of following mechanisms does not directly involve DNA methylation
A. SOS response
B. Mismatch repair
C. protection against restriction enzyme
D. methyl transferase repair

 

[missiondds]

. The drawing to the right illustrates a cross section at the cementoenamel junction. This section is typical of which of the following teeth?

A. maxillary first premolar
B. mandibular second premolar
C. maxillary molar
D. mandibular molar

pls post the answer to this question jackcui

 

[jackcui]

where is most susceptible for a malignant lymphoma

a. duodenum
b. colon
c. ilium
d. stomach
e. esophagus

which of the following components of S.Pnuemoniae renders it to be resistant to phagocytosis from host cell?
a. capsular polysaccharide
b. m protein
c. LPS
d. cell wall
e. IgA protease

where is likely to give rise an oral squamous carcinoma?
a. vlveolar ridge and gingiva
b. mucubuccal fold and buccal mucosa
c. floor of the mouth and lateral tongue
d. labial commissure
e. soft palate and lip

Protiein is heated until it denatures, which of the following bond types is still intact:
a. hydrophobis
b. Van der Waals
c. Hydrogen
d. disufide
e. electrostatic

the Cl-HCO3 transportor system found in the erythrocyte membrane is a type of:
A. symport transport(TP)
B. facilitated TP,
c. passive difussion
d. active TP
e. uniport TP

which of the following viruses most commonly associated with aseptic meningitis

a. coxsackie
b. influenza
c. EBV
d. CMV
e. measles

which of following mechanisms does not directly involve DNA methylation
A. SOS response
B. Mismatch repair
C. protection against restriction enzyme
D. methyl transferase repair.

 

[jackcui]

. The drawing to the right illustrates a cross section at the cementoenamel junction. This section is typical of which of the following teeth?

A. maxillary first premolar
B. mandibular second premolar
C. maxillary molar
D. mandibular molar

no answer for this questions, i think it is maxillary molar.
go to this website, there are some questions, but no answer for reference
http://www.uic.edu/classes/orla/orla312/2000Exam.htm

 

[dental material]

coronal cementum in human teeth can be best described as:

a. cellular with intrinsic and extrinsic fibers
b. cellular with intrinsic fibers
c. cellular with extrinsic fibers
d. acellular with extrinsic fibers
e. acellular and afibrilar

The primary center in the ossification of the mandibular in the six week of the fetal life is the

a. mental foramen
b. condyloid process
c. mandibular foramen
d. coronoid process
e. lingula

Guys any guesses for these?
acellular and afrillar is covering the enamel but i have read from many sources that it do contain both extrinsic and intrinsic fibres

 

[dreamchaser]

coronal cementum in human teeth can be best described as:

a. cellular with intrinsic and extrinsic fibers
b. cellular with intrinsic fibers
c. cellular with extrinsic fibers
d. acellular with extrinsic fibers
e. acellular and afibrilar ????

The primary center in the ossification of the mandibular in the six week of the fetal life is the

a. mental foramen
b. condyloid process
c. mandibular foramen
d. coronoid process
e. lingula

 

[gaya]

Protiein is heated until it denatures, which of the following bond types is still intact:
a. hydrophobis
b. Van der Waals
c. Hydrogen
d. disufide
e. electrostatic



i think the main stabilising bond for the primary structure -peptide bond
secondary structure -hydrogen bond
teritary structure -disulphide bond
upon denaturation only the primary structure remains intact secondary and teritary structure is lost
so the ans to the question cant be disulphide bond

 

[drmissing]

where did u find these questions frm?

these questions were from previous released papers...but thr ans i was doubtful...i guess the ans which u all have postd sounds correct....thanx

 

[missiondds]

Protiein is heated until it denatures, which of the following bond types is still intact:
a. hydrophobis
b. Van der Waals
c. Hydrogen
d. disufide
e. electrostatic



i think the main stabilising bond for the primary structure -peptide bond
secondary structure -hydrogen bond
teritary structure -disulphide bond
upon denaturation only the primary structure remains intact secondary and teritary structure is lost
so the ans to the question cant be disulphide bond

the only bond that remains intact to denaturation is peptide which is a primary bond, also which is an electrstatic bond.


]Protiein is heated until it denatures, which of the following bond types is still intact:
this question means we have to answer a bond that is intact which is peptide bond/ a primary bond. which is electrostatic.

pls confirm again...

 

[jackcui]

Protiein is heated until it denatures, which of the following bond types is still intact:
a. hydrophobis
b. Van der Waals
c. Hydrogen
d. disufide👍
e. electrostatic



i think the main stabilising bond for the primary structure -peptide bond
secondary structure -hydrogen bond
teritary structure -disulphide bond
upon denaturation only the primary structure remains intact secondary and teritary structure is lost
so the ans to the question cant be disulphide bond.

 

[jackcui]

coronal cementum in human teeth can be best described as:

a. cellular with intrinsic and extrinsic fibers
b. cellular with intrinsic fibers
c. cellular with extrinsic fibers
d. acellular with extrinsic fibers
e. acellular and afibrilar 👍
The primary center in the ossification of the mandibular in the six week of the fetal life is the

a. mental foramen🙂
b. condyloid process
c. mandibular foramen
d. coronoid process
e. lingula

 

[missiondds]

coronal cementum in human teeth can be best described as:

a. cellular with intrinsic and extrinsic fibers
b. cellular with intrinsic fibers
c. cellular with extrinsic fibers
d. acellular with extrinsic fibers
e. acellular and afibrilar ????

The primary center in the ossification of the mandibular in the six week of the fetal life is the

a. mental foramen
b. condyloid process
c. mandibular foramen
d. coronoid process
e. lingula

at 6th week of fetal life only one primary ossification centre appears that lies close to mental formen. at 12th week of fetal life 3 ( includes condylar)cartilage processes appear that are essential for over all growth of the mandible.

 

[gaya]

Protiein is heated until it denatures, which of the following bond types is still intact:
a. hydrophobis
b. Van der Waals
c. Hydrogen
d. disufide👍
e. electrostatic



i think the main stabilising bond for the primary structure -peptide bond
secondary structure -hydrogen bond
teritary structure -disulphide bond
upon denaturation only the primary structure remains intact secondary and teritary structure is lost
so the ans to the question cant be disulphide bond.

please confirm the ans for this question .the ans cannot be disulphide bond

 

[dental material]

seeding of transplantation metastasis is likely in carcinomas of the
a skin
b ovary
c tongue
d stomach
e large bowel

1 a,b and d
2 a,c and e
3 a,d and e
4 b,c and d
5 b,d and e

pls. ans with explanation

 

[missiondds]

seeding of transplantation metastasis is likely in carcinomas of the
a skin
b ovary
c tongue
d stomach
e large bowel

1 a,b and d
2 a,c and e
3 a,d and e
4 b,c and d
5 b,d and e

pls. ans with explanation

seeding is distant metastasis, only 3 organs show this nature stomach(kukunberg tumors)colon and ovary

 

[jackcui]

which of the following peptide hormones is the only one that acts as a steroid hormone?
A. ACTH
B. GH
C. ADH
D. TSH
E. LH

the answer is D, TSH. who could explain why?

 

[dental material]

A Each of following events involves recommbination of DNA except-

1 transduction of chromosomal gene
2transposition of genetic material
3 integration of a temperate bacteiophage
4 conjugation eg, transfer of an R [resistance factor]

B Bacterial surface structures that show antigenic diversity include each of following except-
1 pilli
2 capsule
3 flagella
4 peptidoglycan

C which of following disease is best diagnosed by serologic means?
a Q fever
b Pulmonary TB
c Gonorrhea
d Actinomycosis

D Which one of following organism infects GIT and is most frequent cause of bacterimea
a shigella flexneri
b salmonella typhi
c campylobacter jejuni
d vibrio cholerae

pls. ans with explanation

 

[dreamchaser]

A Each of following events involves recommbination of DNA except-

1 transduction of chromosomal gene
2transposition of genetic material
3 integration of a temperate bacteiophage
4 conjugation eg, transfer of an R [resistance factor]

B Bacterial surface structures that show antigenic diversity include each of following except-
1 pilli
2 capsule
3 flagella
4 peptidoglycan

 

[missiondds]

a each of following events involves recommbination of dna except-

1 transduction of chromosomal gene
2transposition of genetic material(answer)
3 integration of a temperate bacteiophage
4 conjugation eg, transfer of an r [resistance factor]

b bacterial surface structures that show antigenic diversity include each of following except-
1 pilli
2 capsule
3 flagella(answer)
4 peptidoglycan

c which of following disease is best diagnosed by serologic means?
A q fever(answer... Only means of diagnosis is elsia/ifa)
b pulmonary tb(zn stain)
c gonorrheagnegative/thayer martin/oxidase positive.. Also elisa)
d actinomycosis(demonstration of sluphur granules)

d which one of following organism infects git and is most frequent cause of bacterimea
a shigella flexneri
b salmonella typhi
c campylobacter jejuni( answer.. More common thn others)
d vibrio cholerae

pls. Ans with explanation

pls post answers

 

[missiondds]

which of the following peptide hormones is the only one that acts as a steroid hormone?
A. Acth
b. Gh
c. Adh
d. Tsh
e. Lh

the answer is d, tsh. Who could explain why?

though tsh is a peptide hormone its mechanism of action is similar to steriod hormone...

 

[dental material]

1 - d [ conjugation of resistant factor ] , may be because conjugation of sex factor F is the one use in recommbinant dna technology
2 - d [peptidoglycan] it might be due to present in both gram negative and positive]
3 - a [Q fever]
4 - b [salmonella typhi] [It multiply in peyer patches and circulate with lymphocytes to various organs]

 

[jackcui]

Select the "factory tooth" from the various teeht show below

a. #A
b. #17
c. #3
d. #18

During formation of enamel, about how many days of formation are represented by each perikymata groove?

a. 3 days
b. 5 days
c. 8 days
d.11 days

 

[d dimps]

which of the following peptide hormones is the only one that acts as a steroid hormone?
A. ACTH
B. GH
C. ADH
D. TSH
E. LH

the answer is D, TSH. who could explain why?

The TSH is a peptide hormone and its function is like that of steroid hormone becoz:

Hormones such as steroid or thyroid hormones, their receptors are located intracellularly within the cytoplasm of their target cell. In order to bind their receptors these hormones must cross the cell membrane. The combined hormone-receptor complex then moves across the nuclear membrane into the nucleus of the cell, where it binds to specific DNA sequences, effectively amplifying or suppressing the action of certain genes, and affecting protein synthesis.

 

[d dimps]

Select the "factory tooth" from the various teeht show below

a. #A
b. #17
c. #3
d. #18

During formation of enamel, about how many days of formation are represented by each perikymata groove?

a. 3 days
b. 5 days
c. 8 days(answer)
d.11 days

Using an 8-day average perikymata periodicity,the defects are calculated.

 

[missiondds]

Select the "factory tooth" from the various teeht show below

a. #A
b. #17
c. #3(answer.. first molars associated with major masticatory function...)
d. #18

During formation of enamel, about how many days of formation are represented by each perikymata groove?

a. 3 days
b. 5 days
c. 8 days
d.11 days

pls post answer

 

[jackcui]

pls post answer

I guess the answers for this 2 questions both should be C. (#3 and 8 days).


this is where the question is from and there is no answer. http://www.uic.edu/classes/orla/orla312/2000Exam.htm

 

[jackcui]

In the primary 2nd mandibular, which cusp has the greatest mesiodistal dimension?

A. Distal
B. MB
C.ML
D.DB
E.DL

A radiograph of the mandible of a 6 year old child reveals that the alveolar bone is fused to root cementum. the diagnosis will be:

A. hypercementosis
B. gomphosis
C. concrescence
D. gemination
E. ankylosis

 

[aim high]

In the primary 2nd mandibular, which cusp has the greatest mesiodistal dimension?

A. Distal
B. MB
C.ML-----answer
D.DB
E.DL

A radiograph of the mandible of a 6 year old child reveals that the alveolar bone is fused to root cementum. the diagnosis will be:

A. hypercementosis
B. gomphosis
C. concrescence
D. gemination
E. ankylosis-----answer

 

[dental material]

please confirm the ans for this question .the ans cannot be disulphide bond

answer should be disulphide bond because its covalent bond and like peptide bond it does not break easily.
All other bonds are weak and break easily

 

[jimrk120884]

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😕

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

 

[morphology]

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😕

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

pls post the answer.
i have a doubt.

see in skeletal muscle depolarization of t tubule open the ca channels in hte nearby SR,causing rlease of ca from the SR into intracellular fluid. while, in smooth muscle action potential opens volage gated channel in cell membrane, also hormone and NT open ip3 gated ca chhanel in SR- so it can be source of ca,
2) ca binds to tropnine c in skeletal ms and binding of ATP cause release of myosin, in smooth mus- ca-calmodulin and also release of decrease in ca cause relaxation, so it can be role of ca.
3) skeletal mucsle - source of energy is ATP, in smooth muscle- it is ca. hence it can be source of energy.



thanks in advance.

 

[jackcui]

answer should be disulphide bond because its covalent bond and like peptide bond it does not break easily.
All other bonds are weak and break easily

yeh. it is disulphide bond