Interferon is

Options

A. antiviral glycoprotein
B. antibacterial glycoprotein
C. antiviral lipoprotein
D. antiviral lipopolysaccharide

Answer

**Step-by-Step Solution:**

1. **Understanding Interferons**: Interferons are proteins that play a crucial role in the immune response, particularly against viral infections. They were first discovered by scientists Isaacs and Lindemann in 1957.

2. **Classification of Interferons**: Interferons are classified as glycoproteins, which means they are proteins that have carbohydrate (sugar) molecules attached to them.

3. **Function of Interferons**: The primary function of interferons is to provide an antiviral response. They are produced and released by cells in response to viral infections, helping to inhibit the replication of viruses.

4. **Evaluating the Options**:
- **Antiviral glycoprotein**: This option correctly describes interferons as they are antiviral and are classified as glycoproteins.
- **Antibacterial glycoprotein**: This option is incorrect because interferons specifically target viruses, not bacteria.
- **Antiviral lipoprotein**: This option is also incorrect as interferons are glycoproteins, not lipoproteins.
- **Antiviral lipopolysaccharides**: This option is incorrect as well, as interferons are not lipopolysaccharides.

5. **Conclusion**: Based on the evaluation of the options, the correct answer is that interferon is an **antiviral glycoprotein**.

**Final Answer**: Interferon is an **antiviral glycoprotein**.

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