Biology Biological Classification Kingdom–Plantae, Animalia and Algae Single Correct MCQ
Published on: August 14, 2026

Which is absent in viruses?

A
Nucleic acid and
B
Protoplasm
C
Protein

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Text Solution

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The correct answer is:
B

Viruses are considered acellular or non-cellular infectious agents. Because they lack a cellular structure, they do not possess protoplasm (the living content of a cell, including cytoplasm and organelles). Instead, a basic virus consists primarily of:

• Nucleic acid: Either DNA or RNA, which serves as their genetic material.

• Protein: A protective coat known as a capsid that surrounds the genetic material.

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