Read the statements given below associated with viruses.
I. Non-living particles.
II. Reproduce by taking over cellular machinery of a living host.
They multiply very slowly.
IV. Antibiotics do not work against viral infections.
Identify the correct statements from above.

Options

A. Only I
B. I,II and III
C. II ,III and IV
D. I ,II and IV

Answer

To identify the correct statements associated with viruses, let's analyze each statement one by one:

1. **Non-living particles**: This statement is correct. Viruses are considered non-living entities because they do not have cellular structures and cannot carry out metabolic processes on their own. They require a host cell to replicate.

2. **Reproduce by taking over cellular machinery of a living host**: This statement is also correct. Viruses cannot reproduce independently; they invade a host cell and hijack its cellular machinery to replicate their genetic material and produce new virus particles.

3. **They multiply very slowly**: This statement is incorrect. Viruses can multiply rapidly once they have infected a host cell. The speed of multiplication can vary depending on the type of virus and the conditions of the host, but many viruses can produce thousands of copies in a short time.

4. **Antibiotics do not work against viral infections**: This statement is correct. Antibiotics are designed to target bacterial infections and do not have any effect on viruses. Therefore, they are ineffective against viral infections.

**Summary of Correct Statements**:
- I. Non-living particles: **Correct**
- II. Reproduce by taking over cellular machinery of a living host: **Correct**
- III. They multiply very slowly: **Incorrect**
- IV. Antibiotics do not work against viral infections: **Correct**

**Final Answer**: The correct statements are I, II, and IV.

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