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UPSC Prelims 2025 Paper-I 📅 25 May, 2025

Consider the following statements:
1. No virus can survive in ocean waters.
II. No virus can infect bacteria.
III. No virus can change the cellular transcriptional activity in host cells.

How many of the statements given above are correct?

A
Only one
B
Only two
C
All the three
D
None
Result Summary
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UPSC Prelims
2025 • 25 May, 2025 • Paper-I
Consider the following statements:
1. No virus can survive in ocean waters.
II. No virus can infect bacteria.
III. No virus can change the cellular transcriptional activity in host cells.

How many of the statements given above are correct?
Correct Answer
None
None of the statements are correct. Oceans contain billions of viruses per liter (marine phages). Viruses that infect bacteria are widely known as bacteriophage......
Ref/Book : UPSC Prelims 2025
Ref. Subject Science & Tech
Chapter -
Ref. Topic Biology
Pg. No -
💡 Analysis & Explanation
Introduction ▼
None of the statements are correct. Oceans contain billions of viruses per liter (marine phages). Viruses that infect bacteria are widely known as bacteriophages. Furthermore, viruses explicitly alter the cellular transcriptional activity of host cells to replicate their own genetic material.
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