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Online Microbiology Test - Microbiology Test - Random

Instruction:
  • This is a FREE online test. Beware of scammers who ask for money to attend this test.
  • Total number of questions: 20.
  • Time allotted: 30 minutes.
  • Each question carries 1 mark; there are no negative marks.
  • DO NOT refresh the page.
  • All the best!

Marks : 2/20

Total number of questions
20
Number of answered questions
0
Number of unanswered questions
20
Test Review : View answers and explanation for this test.
1.
Which of the following organelles contain DNA, divides and possesses some degree of autonomy?
Golgi apparatus
Ribosome
Chloroplast
Peroxisomes
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Learn more problems on : Micro Organisms
2.
The solidifying agent commonly used in preparation of media is/are
agar
silica gel
both (a) and (b)
none of these
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Learn more problems on : Cell Cultures and Characteristics
3.
Proteomics is
the study of algal genomes
a branch of quantum physics dealing with proteins
the study of formation of lipo-protein in animals
the study of the entire collection of proteins expressed by an organism
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Learn more problems on : Microbial Genetics
4.
Which of the following defines an open reading frame (ORF)?
A sequence of genome in bacteriophage
The sequence of a complete genome
A plasmid vector used in genome sequencing
A possible gene predicted by DNA sequencing
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Learn more problems on : Translation and Regulation
5.
Bacteria which produces coagulase is
S epidermidis
S saprophyticus
S aureus
S hominis
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Learn more problems on : Staplylococcus
6.
The media which serve(s) as enrichment media for Salmonella is/are
Tetrathionate broth
Brilliant green tetrathionate broth
Selenite-F broth
All of these
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Learn more problems on : Spirochacter and Enterobacteriaceac
7.
Dysentery may be caused by
enteropathogenic Escherichia coli
enteroinvasive E. coli
enterotoxigenic E. coli
verotoxigenic E. coli
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Learn more problems on : Spirochacter and Enterobacteriaceac
8.
The technique(s), used for the assay of heat-labile enterotoxin produced by Escherichia coli, is/are
Steroid production in Yl mouse adrenal cell culture
Morphological changes in Chinese hamster ovary
Enzyme-linked immunosorbent assay
All of these
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Learn more problems on : Spirochacter and Enterobacteriaceac
9.
Fungi are important to food webs because
they are photoautotrophs
they have prokaryotic cell structure
they serve as key decomposers of dead organic matter
they generate antibiotics that kill competing plants and animals
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Learn more problems on : Fungi - Molds and Yeasts
10.
__________ exhibit yeast-like growth at human body temperatures and mold-like growth at room temperature.
Dimorphic fungi
Black bread molds
Sac fungi
Water molds
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Learn more problems on : Fungi - Molds and Yeasts
11.
The penetration of animal viruses into attached cells occur by mechanisms consisting of engulfment of whole virions by the cells in a phagocytic process called
vitropexis
viropexis
ectodesmata
vivopexis
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Learn more problems on : Viruses From Animal and Plants
12.
Bactericidal concentration of phenol is
0.25%
0.5%
0.75%
1%
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Learn more problems on : Physical and Chemical Agents
13.
The amount of oxygen dissolved in hypolimnion water in the winter is __________ to/than the amount of oxygen dissolved in hypolimnion water in the summer
greater
lesser
approximately equal to
half
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Learn more problems on : Microbes in Aquatic Environment
14.
The acetate-utilizing methanogens are responsible for
20% of methane produced in a biogas reactor
50% of methane produced in a biogas reactor
70% of methane produced in a biogas reactor
85% of methane produced in a biogas reactor
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Learn more problems on : Microbiology of Waste Water
15.
An alkaline reaction in milk is caused by the alkali formers bacteria as
Pseudomonas fluorescens
A. viscolactis
both (a) and (b)
none of these
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Learn more problems on : Milk and Milk Products
16.
In storage atmospheres of high humidity variety of molds may cause
superficial fungal spoilage
bacterial spoilage
both (a) and (b)
none of these
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Learn more problems on : Poultry, Egg and Meat
17.
The ability of B. coagulans to grow in tomato juice depends upon the
number of spores present
the availability of oxygen
the pH of the juice
all of these
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Learn more problems on : Heated Canned Foods
18.
High acid foods with a pH < 3.7 undergo spoilage by
Saccharolytic anaerobe
B. coagulans
both (a) and (b)
do not undergo spoilage by microorganisms
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Learn more problems on : Heated Canned Foods
19.
Which of the following microorganism can yield vitamin B12 using methanol as a carbon source?
Methanobacterium soehngenii
Methanobacillus omelianski
Protaminobacter ruber
All of the above
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Learn more problems on : Industrially Useful Microbial Processes
20.
Inclusion bodies of measles virus are
intracytoplasmic
intranuclear
both (a) and (b)
none of these
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Learn more problems on : Viruses
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