Free Printable Microbiology Quiz

1.

1. Which among the following shows the proper way of writing a bacterial name?

a)

Staphylococcus Aureus

b)

Staphylococcus Aureus

c)

Staphylococcus aureus

d)

Staphylococcus aureus

2.

Which among the following organism causes British diarrhea?

a)

Shigella flexneri

b)

Shigella sonnei

c)

Shigella boydii

d)

Shigella dysenteriae

3.

Trypsin, a normal component of an infant’s stool, is an indication of Cystic fibrosis in the pancreas, when absent in an infant’s stool. What test can be performed in testing the level of Trypsin in the stool of a child

a)

Guiac’s test

b)

Gelatin Test

c)

Mucicarmine Test

d)

Schmidt Test

4.

Intestinal Anthrax is commonly known as

a)

Black Eschar

b)

Woolsorter’s Disease

c)

Violent Enteritis

d)

Gangrene

5.

The following statements describe Streptococcus pneumoniae except ___.

a)

It is a capsulated organism which can be tested with the use of Quellung Test

b)

It is Optochin Sensitive

c)

It is Bile Solubility Test negative

d)

It does not produce the enzyme Catalase

6.

The function of Sucrose in a culture media is ___.

a)

To detect the presence of late lactose fermenters

b)

To serve as a control for lactose fermenter organisms

c)

To detect the presence of glucose fermenters not detected by lactose

d)

To inhibit the swarming of proteus

7.

All of the following are Methyl Red positive except ___.

a)

Escherichia

b)

Shigella

c)

Citrobacter

d)

Hafnia

8.

Double Sugar Iron Agar (DSIA) is also known as ___.

a)

Spangler Agar

b)

Koch Agar

c)

Lewis Agar

d)

Krigler Agar

9.

Mueller’s Test is a test for ___.

a)

Decarboxylation of amino acid

b)

Deamination of amino acid

c)

Both

d)

Neither

10.

Naeglar agar is commonly used in culturing what organism?

a)

Staphylococcus

b)

Clostridium

c)

Streptococcus

d)

Naeglaria fowlerii

11.

The method of sterilization which is commonly used in culture plates with a high amount of protein is known as ___.

a)

Autoclaving

b)

Red Heat

c)

Boiling

d)

Inspissation

12.

Which among the following properly describes a Pai Coaggulated Media?

a)

It is used for enhancing the palisade formation of Corynebacterium diphtheria

b)

It is used for enhancing the metachromatic granules of Corynebacterium diphtheria

c)

It is used for observing the halo-production of Corynebacterium diphtheria colonies

d)

All of the above

13.

Organisms that are acquired via digestion will fall in what Biosafety Level?

a)

I

b)

II

c)

III

d)

IV

14.

Which among the following viruses is not an exotic organism BSL IV?

a)

Arbovirus

b)

Arenavirus

c)

HTLV

d)

Smallpox virus

15.

When performing an anaerobic catalase test, which among the following reagents should be used?

a)

3% H₂O₂

b)

6% H₂O₂

c)

12% H₂O₂

d)

15% H₂O₂

16.

Which among the following organisms is distinguished by a “Chartreuse color fluorescence”?

a)

Actinomyces

b)

Bacteroides

c)

Eubacterium

d)

Lactobacilli

17.

Which among the following organisms is distinguished by a“Breadcrumb-like” colony?

a)

Bifidibacterium

b)

Actinomyces

c)

Fusobacterium

d)

Eubacterium

18.

Which among the following organisms is distinguished by a “raspberry-like” colony?

a)

Leptotrichia

b)

Bifidibacterium

c)

Actinomyces

d)

Eubacterium

19.

Which among the following organisms is distinguished by a “brick red fluorescence”?

a)

Bifidibacterium

b)

Actinomyces

c)

Eubacterium

d)

Porphyromonas

20.

Which of the following is the anaerobic environment achieved in the glove-box method?

a)

85% hydrogen, 5% carbon dioxide, 5% nitrogen

b)

85% oxygen, 10% hydrogen, 5% carbon dioxide

c)

85% nitrogen, 10% hydrogen, 5% carbon dioxide

d)

75% nitrogen, 15% hydrogen, 10% carbon dioxide

21.

To quantify Plasmodium against erythrocytes, what formula should you use?

a)

$\%\ Parasetimia\ =\ \left(\frac{Parasitized\ RBC}{Total\ RBC}\right)x\ 100$

b)

$\%\ Parasetimia\ =\ \left(\frac{Parasitized\ Retic}{Total\ RBC}\right)x\ 100$

c)

$\%\ Parasetimia\ =\ \left(\frac{Parasitized\ RBC}{Total\ WBC}\right)x\ 100$

d)

$\%\ Parasetimia\ =\ \left(\frac{Parasitized\ RBC}{Total\ Retic}\right)x\ 100$

22.

The most commonly used dye for detecting blood parasites is known as (a) .

23.

Waterhouse-Friderichsen syndrome is associated with:

a)

Neisseira elongata

b)

Neisseria gonorrhoeae

c)

Neisseria meningitidis

d)

Neisseria subflava

24.

Clostridium difficile is the causative agent of:

a)

Gas gangrene

b)

Botulism

c)

Tetanus

d)

Antibiotic-associated pseudomembranous colitis

25.

Which of the following statements is correct for Group D Streptococcus?

a)

Enterococci comprise only 2 species, S. bovis and S. equinis

b)

Enterococci and non-enterococci are bile-esculin negative

c)

Pyrase is positive for Enterococcus but negative for non-Enterococcus

d)

Non-enterococci can grow in 6.5% sodium chlorite (NaCl) broth (are salt tolerant)

26.

Which of the following sites does not contain normal flora?

a)

Colon

b)

Urinary Bladder

c)

Skin

d)

Mouth

27.

Which of the following mycobacteria belong to Group IV or the rapid growers?

a)

Mycobacterium fortuitum-chelonei complex

b)

Mycobacterium smegmatis

c)

Mycobacterium phlei

d)

All of the above

28.

Dapsone (a sulfone drug) is used for the treatment of:

a)

Cholera

b)

Leprosy

c)

Tularemia

d)

Tetanus

29.

Sodium polyamethol sulfonate is the best anticoagulation for blood used in Microbiology lab because of its:

a)

Anticoagulant properties

b)

Anticomplementary properties

c)

Antiphagocytic properites

d)

All of the above

30.

Mode of transmission of Scrub typhus caused by Rickettsia tsutsugamushi:

a)

Tick bite

b)

Lice bite

c)

Chigger bite

d)

Mite bite

31.

What is the test used to differentiate Plsiomonas shigelloides from Shigella spp.?

a)

Oxidase Test

b)

Microdase Test

c)

Gram's Stain

d)

MUG Test

32.

Satelliting streptococci is commonly referred to:

a)

Streptococcus agalactiae

b)

Streptococcus adjacens

c)

Streptococcus pyogenes

d)

Viridans Streptococci

33.

Bismuth sulfite or brilliant green agar is specifically for the isolation of:

a)

Edwardsiella tarda

b)

Shigella dysenteriae

c)

Escherichia coli

d)

Salmonella typhi

34.

It is associated with skin infections occurring as red to blue lesions and also the agent of swimming pool granuloma:

a)

Mycobacterium marinum

b)

Mycobacterium asiaticum

c)

Mycobacterium gordonae

d)

MTB

35.

Sodoku is caused by

a)

Spirillum

b)

Bordetella pertussis

c)

Eubacterium

d)

Legionella

Microbiology Quiz

Total questions: 35

Worksheet time: 20mins

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