The protein of viruses is called-

Options

A. Capsid
B. Capsomere
C. Core
D. Envelope

Answer

**Step-by-Step Solution:**

1. **Understanding Virus Structure**: Viruses are composed of two main components: nucleic acid and protein. The nucleic acid can either be DNA or RNA, while the protein component serves as a protective cover.

2. **Identifying the Protein Component**: The protein that forms the protective cover around the nucleic acid in a virus is crucial for its structure and function. This protein is not just a random term; it has a specific name.

3. **Terminology**: The term used for the protein covering of a virus is "capsid." The capsid is made up of smaller units called "capsomers," which are themselves composed of amino acids.

4. **Conclusion**: Therefore, the correct term for the protein of viruses is "capsid," which corresponds to option 1.

**Final Answer**: The protein of viruses is called **capsid**.

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