Microbiology Quiz Question & Answers

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

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Microbiology Quiz Question & Answers (Total 50 MCQs)

Microbiology Online Mock Test (high level)

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Question 1
Which of the following when incorporated in medium enhances the pigment production in staphylococcus?
A
blood
B
milk
C
meat
D
serum
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
Sereny test is used for the detection of
A
EPEC
B
EHEC
C
ETEC
D
EIEC
Question 4
Which test differentiates between Staphylococcus epidermidis and Staphylococcus saprophyticus?
A
coagulase test
B
novobiocin sensitivity
C
bacitracin sensitivity
D
catalase test
Question 5
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 6
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
Question 7
Intestitial pneumonia is caused by
A
Pneumocystis carinii
B
Cryptococcus neoformans
C
Candida albicans
D
Aspergillusniger
Question 8
Exaltation is
A
increase in virulence
B
increase in antigenicity
C
decrease in virulence
D
decrease in antigenicity
Question 9
Which of the following is ideal for sterilization of endoscopes?
A
glutaraldehyde
B
phenol
C
hypochlorites
D
formaldehyde
Question 10
What is the pH of sabouraud's dextrose agar?
A
5.4
B
4.8
C
6.4
D
7.6
Question 11
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 12
Which of the following can grow on blood agar?
A
R prowazekii
B
B qunitana
C
tsutsugamushi
D
Cox burnetii
Question 13
Which of the following fungus can cause oral thrush?
A
Candida albicans
B
Cryptococcus neoformans
C
Aspergillusniger
D
Mucor
Question 14
A mature cyst of E histolytica is
A
mononucleate
B
binucleate
C
quadrinucleate
D
hexanucleate
Question 15
Following are the sheathed microfilaria EXCEPT
A
Mf bancrofti
B
Mf malayi
C
Mf loa
D
Mf volvulus
Question 16
Sporulation of bacteria occurs in
A
lag phase
B
log phase
C
stationery phase
D
All of these
Question 17
Pike's medium is used for the cultivation of
A
staphylococci
B
meningococci
C
streptococci
D
gonococci
Question 18
Which of the following infection is caused by streptococci?
A
trench fever
B
Q fever
C
scarlet fever
D
yellow fever
Question 19
Diphtheria toxin acts by
A
inhibiting acetylcholine release
B
increasing levels of cAMP
C
inhibiting protein synthesis
D
activation of cGMP
Question 20
C diphtheriae shows
A
thumb print appearance
B
cuneiform appearance
C
school of fish appearance
D
cigar bundle appearance
Question 21
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 22
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 23
Which of the following antibody indicates recent infections
A
IgM
B
IgG
C
IgD
D
IgE
Question 24
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 25
Viral mediated transmission of genetic material in bacteria is known as
A
transformation
B
transcription
C
transduction
D
conjugation
Question 26
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 27
Intravenous inoculation of tetanospasmin in experimental animal causes
A
local tetanus
B
ascending tetanus
C
descending tetanus
D
none of these
Question 28
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 29
Prozone is a zone of
A
antigen excess
B
antibody excess
C
equivalence
D
none of these
Question 30
Robert Koch isolated the following bacteria EXCEPT
A
M.tuberculosis
B
B.anthracis
C
M.leprae
D
V.cholerae
Question 31
Premunition immunity is important in
A
malaria
B
syphilis
C
streptococcal infection
D
both malaria and syphilis
Question 32
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 33
Which of the following acts as intermediate host in guinea worm life cycle?
A
cyclops
B
crab
C
snail
D
fish
Question 34
Which of the following is intermediate host for L donovani?
A
sandfly
B
housefly
C
tsetsefly
D
reduvid bug
Question 35
Which of the following serological marker is not seen in simple carriers?
A
HBV
B
HBeAg
C
DNA polymerase
D
All of these
Question 36
Which of the following CD marker is present on T helper cells?
A
CD4
B
CD8
C
CD19
D
CD64
Question 37
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 38
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 39
PLT agents are
A
Chlamydiae
B
Mycoplasma
C
Rickettsia
D
Actinomyces
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
Cytomegalovirus is associated with
A
carcinoma prostate
B
kaposi' sarcoma
C
both carcinoma prostate and kaposi' sarcoma
D
infectious mononucleosis
Question 42
Fungal ball formation can occur in
A
Penicilliosis
B
Mucormycosis
C
Aspergillosis
D
Blastomycosis
Question 43
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 44
Following are suitable disinfectants for skin EXCEPT:
A
ethanol
B
dettol
C
savlon
D
formaldehyde
Question 45
Resolving power of electron microscope is about
A
0.1 nm
B
0.01 nm
C
10 nm
D
10µm
Question 46
The smallest unit of antigenicity is known as
A
paratope
B
epitope
C
hapten
D
none of these
Question 47
Which of the following is non-suppurativesequelae of streptococcal infection?
A
rheumatoid arthritis
B
acute glomerulonephritis
C
osteomyelitis
D
trench fever
Question 48
Mycoplasma shows
A
fried egg colony
B
poached egg colony
C
daisy head colony
D
medusa head colony
Question 49
Moist heat under pressure is used in
A
tyndallization
B
inspissation
C
pasteurization
D
autoclave
Question 50
Herpes simplex virus II is associated with
A
carcinoma cervix
B
carcinoma colon
C
carcinoma skin
D
carcinoma lung
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