Which statement is correct for all viruses but not for all bacteria and fungi?

C. They have a nucleus containing DNA or RNA

A. They can reproduce on their own

B. They have a cell wall made of chitin

C. They have a nucleus containing DNA or RNA

D. They have a cell membrane made of phospholipids

Which group of viruses can cause diseases like influenza, measles and rabies?

C. Bacterial viruses (Bacteriophages)

Everyday Science · Cell Biology & Microorganisms · page 8 of 22

Bacteria MCQs with Answers

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Bacteria, Viruses & Microorganisms MCQs (71–80)

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Past paper MCQs in this chapter · See all past papers

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71.
The process of is accomplished by Rhizobium bacteria?
Correct Answer: D. Nitrogen fixation
One-liner
The process accomplished by Rhizobium bacteria is Nitrogen fixation.
72.
Study of viruses is called _?
Correct Answer: C. Virology
One-liner
The study of viruses is called Virology.
73.
Bacteria which grow in oxygen and in absence of oxygen environment is known as ?
Correct Answer: C. Facultative Anaerobic
One-liner
Bacteria that can grow both in the presence and absence of oxygen are called Facultative Anaerobic bacteria.
74.
Which one archaea dominantly occur in Dead Sea?
Correct Answer: B. Halophiles
One-liner
Halophiles are the archaea that dominantly occur in the Dead Sea.
75.
Which of the following is the primary cause of blackleg?
Correct Answer: B. Bacteria
One-liner
The primary cause of blackleg is bacteria (specifically *Clostridium chauvoei*).
76.
What is the causative agent of Influenza?
Correct Answer: B. Virus
One-liner
Influenza (flu) is caused by a Virus, specifically the influenza virus belonging to the Orthomyxoviridae family.
77.
Which of the following is considered one of the smallest viruses?
Correct Answer: B. Bacteriophage
One-liner
Bacteriophage is considered one of the smallest viruses, typically measuring only about 20–200 nanometres in size.
78.
Which statement is correct for all viruses but not for all bacteria and fungi?
Correct Answer: C. They have a nucleus containing DNA or RNA
One-liner
The given statement is factually incorrect — viruses do not have a nucleus; they have a nucleic acid core (DNA or RNA) but lack a true nucleus, while bacteria and fungi do possess a nucleus (or nucleoid in bacteria) containing their genetic material.
79.
Past Paper MCQ
Where was the Zika virus first identified?
Correct Answer: C. Uganda
One-liner
The Zika virus was first identified in Uganda in 1947 in the Zika Forest.
80.
Which group of viruses can cause diseases like influenza, measles and rabies?
Correct Answer: D. Animal viruses
One-liner
Diseases like influenza, measles, and rabies are caused by animal viruses, which specifically infect animal cells including those of humans.

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Bacteria MCQs with Answers

Bacteria, Viruses & Microorganisms MCQs (71–80)

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