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MIC 121 GENERAL CHARACTERISTICS AND STRUCTURE OF VIRUSES Objective Question
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Question

What is the primary function of a 'positive polarity' single-stranded RNA (ssRNA) viral genome?
Options
A It serves directly as a template for DNA synthesis.
B It is complementary to messenger RNA and cannot be used for protein synthesis.
C It can serve directly as a template for protein synthesis (messenger RNA sense).
Correct Answer
D It must first be converted into negative polarity RNA before protein synthesis.
Correct Answer

Option C is the correct answer.

Detailed Explanation

The document defines 'positive polarity' ssRNA as 'messenger RNA sense, which can serve as a template for protein synthesis'. 'Negative polarity' is described as antisense and complementary to mRNA, meaning it cannot be directly used as a template for protein synthesis.

Hint

Consider the definition of 'positive polarity' in the context of viral RNA genomes and its relationship to protein synthesis.

Question Info

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