Question Detail

MIC 121 GENERAL CHARACTERISTICS AND STRUCTURE OF VIRUSES Objective Question
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Question

Viroids are unique infectious agents characterized by all of the following except:
Options
A They cause diseases primarily in plants.
B They consist of circular, single-stranded RNA.
C They lack a protein coat (capsid) or envelope.
D They contain both DNA and RNA as their genetic material.
Correct Answer
Correct Answer

Option D is the correct answer.

Detailed Explanation

Viroids consist solely of 'circular, single-stranded RNA molecule without a protein coat or envelope.' They do not contain both DNA and RNA; viruses are the ones that contain either DNA or RNA, but never both.

Hint

Focus on the definition and composition of viroids. Do they have a capsid or a mixed genome?

Question Info

Course: MIC 121
Topic: GENERAL CHARACTERISTICS AND STRUCTURE OF VIRUSES
Type: Objective
Difficulty: Not specified
Question 130 of 984
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