Microbiology Quiz Question & Answers

Microbiology Quiz Question & Answers (Question Bank) Free Online Test For Medical Students like PG, PHD, Specialist exam entrance.

We have put total 50 Objective Type Question Answers on Microbiology, you can practice these question answers for free. Well you can also check list of Online Medical Entrance Mock Test / Quiz question comes from different areas on Medical.

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Microbiology Quiz Question & Answers (Total 50 MCQs)

Microbiology Online Mock Test (high level)

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Question 1
What is the pH of sabouraud's dextrose agar?
A
5.4
B
4.8
C
6.4
D
7.6
Question 2
Which of the following virus produce both intranuclear and intracytoplasmic inclusion?
A
Herpes virus
B
Polio virus
C
Measles virus
D
Pox virus
Question 3
Viral mediated transmission of genetic material in bacteria is known as
A
transformation
B
transcription
C
transduction
D
conjugation
Question 4
C diphtheriae shows
A
thumb print appearance
B
cuneiform appearance
C
school of fish appearance
D
cigar bundle appearance
Question 5
Fungal ball formation can occur in
A
Penicilliosis
B
Mucormycosis
C
Aspergillosis
D
Blastomycosis
Question 6
Diphtheria toxin acts by
A
inhibiting acetylcholine release
B
increasing levels of cAMP
C
inhibiting protein synthesis
D
activation of cGMP
Question 7
Which of the following is intermediate host for L donovani?
A
sandfly
B
housefly
C
tsetsefly
D
reduvid bug
Question 8
Prozone is a zone of
A
antigen excess
B
antibody excess
C
equivalence
D
none of these
Question 9
Sereny test is used for the detection of
A
EPEC
B
EHEC
C
ETEC
D
EIEC
Question 10
Which strain is responsible for most of the infection by Haemophilusinfluenzae?
A
capsular serotype A
B
capsular serotype B
C
capsular serotype C
D
capsular serotype D
Question 11
Food poisoning exclusively due to the consumption of fried rice from chinese restaurant is caused by:
A
S typhimurium
B
B cereus
C
Clwelchii
D
S aureus
Question 12
Transfusion syphilis can be prevented by
A
disinfection of blood
B
filtration of blood
C
addition of antibiotics
D
storage of blood for four days in refrigerator
Question 13
Resolving power of electron microscope is about
A
0.1 nm
B
0.01 nm
C
10 nm
D
10µm
Question 14
Following are suitable disinfectants for skin EXCEPT:
A
ethanol
B
dettol
C
savlon
D
formaldehyde
Question 15
Exaltation is
A
increase in virulence
B
increase in antigenicity
C
decrease in virulence
D
decrease in antigenicity
Question 16
Sporulation of bacteria occurs in
A
lag phase
B
log phase
C
stationery phase
D
All of these
Question 17
Which of the following when incorporated in medium enhances the pigment production in staphylococcus?
A
blood
B
milk
C
meat
D
serum
Question 18
Following are the characters of street virus in rabies
A
virus is isolated from natural case
B
have variable long incubation period
C
negri bodies are seen
D
All of these
Question 19
Which of the following serological marker is not seen in simple carriers?
A
HBV
B
HBeAg
C
DNA polymerase
D
All of these
Question 20
Pike's medium is used for the cultivation of
A
staphylococci
B
meningococci
C
streptococci
D
gonococci
Question 21
Which of the following antibody indicates recent infections
A
IgM
B
IgG
C
IgD
D
IgE
Question 22
Which of the following is ideal for sterilization of endoscopes?
A
glutaraldehyde
B
phenol
C
hypochlorites
D
formaldehyde
Question 23
Following are the sheathed microfilaria EXCEPT
A
Mf bancrofti
B
Mf malayi
C
Mf loa
D
Mf volvulus
Question 24
Cytomegalovirus is associated with
A
carcinoma prostate
B
kaposi' sarcoma
C
both carcinoma prostate and kaposi' sarcoma
D
infectious mononucleosis
Question 25
Premunition immunity is important in
A
malaria
B
syphilis
C
streptococcal infection
D
both malaria and syphilis
Question 26
Which of the following is example of artificial passive immunity?
A
administration of Anti tetanus serum
B
administration of live vaccines
C
administration of killed vaccine
D
transfer of maternal antibody through placenta to foetus
Question 27
The smallest unit of antigenicity is known as
A
paratope
B
epitope
C
hapten
D
none of these
Question 28
Which of the following acts as intermediate host in guinea worm life cycle?
A
cyclops
B
crab
C
snail
D
fish
Question 29
Function of transactivating gene of HIV is
A
enhancing expression of viral gene
B
downregulating viral replication
C
enhancing expression of structural proteins
D
All of these
Question 30
Which of the following infection is caused by streptococci?
A
trench fever
B
Q fever
C
scarlet fever
D
yellow fever
Question 31
Moist heat under pressure is used in
A
tyndallization
B
inspissation
C
pasteurization
D
autoclave
Question 32
Which test differentiates between Staphylococcus epidermidis and Staphylococcus saprophyticus?
A
coagulase test
B
novobiocin sensitivity
C
bacitracin sensitivity
D
catalase test
Question 33
Total absence of Vi Ab in a proven case of typhoid fever indicates
A
good prognosis
B
carrier state
C
cure from disease
D
poor prognosis
Question 34
Which of the following CD marker is present on T helper cells?
A
CD4
B
CD8
C
CD19
D
CD64
Question 35
Intravenous inoculation of tetanospasmin in experimental animal causes
A
local tetanus
B
ascending tetanus
C
descending tetanus
D
none of these
Question 36
Which of the following serotype of poliovirus is responsible for most of the epidemics?
A
serotype 1
B
serotype 2
C
serotype 3
D
All of these
Question 37
Mycoplasma shows
A
fried egg colony
B
poached egg colony
C
daisy head colony
D
medusa head colony
Question 38
Herpes simplex virus II is associated with
A
carcinoma cervix
B
carcinoma colon
C
carcinoma skin
D
carcinoma lung
Question 39
Which of the following test can be used to differentiate between meningococci and gonococci?
A
catalase test
B
oxidase test
C
maltose fermentation test
D
glucose fermentation test
Question 40
Which of the following reaction is mediated by IgG and IgM?
A
type II
B
type III
C
type IV
D
both type II and type III
Question 41
Which of the following fungus can cause oral thrush?
A
Candida albicans
B
Cryptococcus neoformans
C
Aspergillusniger
D
Mucor
Question 42
Which of the following can grow on blood agar?
A
R prowazekii
B
B qunitana
C
tsutsugamushi
D
Cox burnetii
Question 43
PLT agents are
A
Chlamydiae
B
Mycoplasma
C
Rickettsia
D
Actinomyces
Question 44
Which of the following is non-suppurativesequelae of streptococcal infection?
A
rheumatoid arthritis
B
acute glomerulonephritis
C
osteomyelitis
D
trench fever
Question 45
Robert Koch isolated the following bacteria EXCEPT
A
M.tuberculosis
B
B.anthracis
C
M.leprae
D
V.cholerae
Question 46
Intestitial pneumonia is caused by
A
Pneumocystis carinii
B
Cryptococcus neoformans
C
Candida albicans
D
Aspergillusniger
Question 47
Which of the following is a feature of El Tor vibrio?
A
vogesproskauer test -ve
B
polymyxin B sensitive
C
susceptible to phage gr IV
D
agglutination of chick erythrocytes
Question 48
A mature cyst of E histolytica is
A
mononucleate
B
binucleate
C
quadrinucleate
D
hexanucleate
Question 49
Which of the following medium is used to grow Rhinosporidiumseeberi?
A
sabouraud's dextrose agar
B
rectal epithelial cell lines
C
corn meal agar
D
none of these
Question 50
Which of the following antifungal agent is added to sabouraud's dextrose agar to prevent growth of saprophytic fungi?
A
cycloheximide
B
ketoconazole
C
griseofulvin
D
amphotericin B
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