Viral envelope is made of

Options

A. Proteins
B. Lipid
C. Carbohydrates
D. All the above

Answer

### Step-by-Step Solution:

1. **Understanding Virus Structure**:
- A virus consists of several components, including nucleic acid (DNA or RNA), a protein coat called a capsid, and sometimes an outer envelope.

2. **Identifying the Envelope**:
- The viral envelope is a membranous layer that surrounds the virus. It is not present in all viruses; it is primarily found in certain animal viruses.

3. **Composition of the Envelope**:
- The envelope is made up of three main components: proteins, lipids, and carbohydrates.
- The proteins in the envelope can form structures called peplomers, which may protrude from the surface and can play a role in the virus's ability to infect host cells.

4. **Distinguishing Between Capsid and Envelope**:
- It is important to differentiate between the capsid (made of capsomeres) and the envelope (made of peplomers). The capsid serves to protect the viral genetic material, while the envelope can aid in the virus's entry into host cells.

5. **Conclusion**:
- Therefore, the viral envelope is made up of proteins, lipids, and carbohydrates.

### Final Answer:
The viral envelope is made of proteins, lipids, and carbohydrates.

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