Mature virus pariticle is

Options

A. Virion
B. Viricide
C. Capsid
D. Peplomer

Answer

To answer the question "Mature virus particle is," we need to analyze the given options and identify which one correctly describes a mature virus particle.

### Step-by-Step Solution:

1. **Understanding the Term "Mature Virus Particle":**
- A mature virus particle refers to a fully developed virus that is capable of infecting a host. It is typically composed of genetic material (either RNA or DNA) and a protective protein coat.

2. **Analyzing the Options:**
- **Option 1: Virion**
- A virion is defined as a complete virus particle that consists of either RNA or DNA surrounded by a protein coat. It is the mature form of a virus that is capable of independent existence and can infect a host.

- **Option 2: Viricide**
- A viricide is a substance that destroys viruses. It is not a virus particle itself but rather a chemical agent that can inactivate or kill viruses.

- **Option 3: Capsid**
- The capsid is the protein coat that encases the viral genetic material. While it is an essential part of a virus, it does not represent the entire mature virus particle, as it lacks the genetic material.

- **Option 4: Peplomer**
- Peplomers are glycoprotein spikes found on the surface of some viruses. They are involved in the attachment of the virus to host cells but do not represent the whole virus particle.

3. **Identifying the Correct Answer:**
- Based on the definitions and characteristics of each option, the only term that accurately describes a mature virus particle is **Virion**. It is complete, containing the necessary components for infection.

4. **Conclusion:**
- Therefore, the correct answer to the question "Mature virus particle is" is **Virion**.

### Final Answer:
**Virion**