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Microbes MCQ Questions & Answers - Biology Class 12

Microbes MCQs : This section focuses on the "Microbes" in Biology Class 12. These Multiple Choice Questions (MCQs) should be practiced to improve the Biology Class 12 skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.

Question 1

Microbes are _________ organisms that are invisible to the naked eye.

A. minute
B. unicellular
C. multicellular
D. minute and unicellular

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Question 2

Microbes make up almost ______ of the earth’s living matter. 

A. 0.5
B. 0.6
C. 0.7
D. 0.8

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Question 3

Microbes can be useful as well as harmful.

C. Can be true or false
D. Can not say

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Question 4

Which of the following is true about Viruses?

A. Viruses are a connecting link between living and non-living
B. They are non-cellular microorganisms
C. They contain the core of nucleotides surrounded by a protein coat which could invade living cells
D. All of the above

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Question 5

Which of the following is/are microbes?

A. Bacteria
B. Fungi
C. Protists
D. All of the above

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Question 6

What is the average size of a microbe?

A. Less than 1 mm
B. More than 1 cm
C. Less than 0.1 mm
D. More than 0.1 mm

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Question 7

Which of the following is not related to microbes?

A. Microbes produce chemicals during their metabolism
B. Microbes are not ideal for biotechnology
C. Microbes can be grown on artificial medium
D. Microbes can live in highly acidic medium

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Question 8

Adenoviruses cause _________

A. Heart attack
B. Intestinal perforation
C. Respiratory infections
D. Gastric problems

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Question 9

Bacteria play an important role in human survival.

A. Yes
B. No
C. Can be yes or no
D. Can not say

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Question 10

Which of the following are unicellular prokaryotic organisms and have a structure similar to bacteria?

A. Protists
B. Archaea
C. Viruses
D. Fungi

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