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MIC 121 GENERAL CHARACTERISTICS AND STRUCTURE OF VIRUSES Objective Question
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Question

Which of the following best describes the composition of a viroid?
Options
A A protein coat enclosing a double-stranded DNA genome.
B A lipid envelope surrounding a single-stranded RNA genome and a protein coat.
C A single circular, single-stranded RNA molecule without a protein coat or envelope.
Correct Answer
D An infectious protein particle lacking nucleic acid.
Correct Answer

Option C is the correct answer.

Detailed Explanation

According to the document, 'Viroids consist of a single circular, single-stranded RNA molecule without a protein coat or envelope.' They are also noted as the 'smallest known pathogen' composed solely of closed, circular ssRNA, lacking a protein coat (capsid).

Hint

Viroids are unique because they lack the protective protein shell found in viruses.

Question Info

Course: MIC 121
Topic: GENERAL CHARACTERISTICS AND STRUCTURE OF VIRUSES
Type: Objective
Difficulty: Not specified
Question 135 of 984
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