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Practice question

MCQ

Question

Three infectious agents are examined: X contains nucleic acid enclosed by a capsid, Y is free low-molecular-weight RNA without a protein coat, and Z consists of abnormally folded protein. Which identification is correct?

Options

Choose one · Correct answer highlighted

Explanation

A virus contains RNA or DNA protected by a protein capsid. A viroid consists of free, low-molecular-weight RNA and lacks a protein coat. A prion is an infectious agent made of abnormally folded protein.

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