Question Detail

MIC 121 GENERAL CHARACTERISTICS AND STRUCTURE OF VIRUSES Objective Question
Take CBT

Question

Single-stranded viral RNA genomes can be further categorized by their polarity. What does 'positive polarity' mean for an ssRNA genome?
Options
A It is complementary to messenger RNA sense and cannot be directly used for protein synthesis.
B It is messenger RNA sense and can serve directly as a template for protein synthesis.
Correct Answer
C It indicates the RNA is double-stranded and linear.
D It means the RNA genome is always circular.
Correct Answer

Option B is the correct answer.

Detailed Explanation

The text explains: 'Single-stranded viral RNA genomes are further divided into 'positive polarity' (messenger RNA sense, which can serve as a template for protein synthesis) and 'negative polarity,' or antisense (complementary to messenger RNA sense, which cannot be directly used as a template for protein synthesis).'

Hint

Which type of RNA is directly readable by ribosomes?

Question Info

Course: MIC 121
Topic: GENERAL CHARACTERISTICS AND STRUCTURE OF VIRUSES
Type: Objective
Difficulty: Not specified
Question 100 of 984
Previous Course Details Next