Everyday Science · Cell Biology & Microorganisms · page 22 of 22

Bacteria MCQs with Answers

Includes 22 past paper MCQs (marked).

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Bacteria, Viruses & Microorganisms MCQs (211–214)

4 MCQs with answers and a short one-liner. Hide answers to test yourself.

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211.
Which of the following are prokaryotes?
Correct Answer: A. Archaea and bacteria
One-liner
Prokaryotes are organisms whose cells lack a true nucleus and membrane-bound organelles, which include Archaea and bacteria.
212.
Which feature is absent in Gram-positive bacteria?
Correct Answer: C. Lipopolysaccharides
One-liner
Gram-positive bacteria lack lipopolysaccharides, which are a characteristic component of the outer membrane of Gram-negative bacteria.
213.
Which one is not an RNA virus?
Correct Answer: C. Poxvirus
One-liner
<strong>Poxvirus</strong> is not an RNA virus; it is a DNA virus.
214.
Microorganisms are classified into how many main groups?
Correct Answer: D. 3
One-liner
Microorganisms are classified into 3 main groups: bacteria, viruses, and fungi (with some classifications also including protozoa and algae, but the primary three-group classification is widely taught).