Enzymes are not found in

Options

A. Fungi
B. Algae
C. Virus
D. Cyanobacteria

Answer

### Step-by-Step Solution:

1. **Understanding Enzymes**: Enzymes are biological catalysts that speed up chemical reactions in living organisms. They are primarily proteins that facilitate metabolic processes.

2. **Presence of Enzymes in Organisms**: Enzymes are found in various organisms, including fungi, algae, and cyanobacteria. These organisms rely on enzymes for metabolic activities such as digestion and absorption of nutrients.

3. **Role of Enzymes**: Enzymes play a crucial role in metabolism, which includes breaking down food and synthesizing necessary compounds for growth and energy.

4. **Examining Viruses**: Unlike fungi, algae, and cyanobacteria, viruses are unique entities. They lack cellular structures such as cell membranes, protoplasm, ribosomes, and organelles. Their structure consists only of genetic material enclosed in a protein coat.

5. **Lack of Metabolism in Viruses**: Viruses do not carry out metabolic processes independently. They require a host cell to replicate and do not perform any metabolic functions on their own.

6. **Conclusion**: Since viruses do not engage in metabolic activities and lack the necessary cellular machinery, they do not produce or require enzymes. Therefore, enzymes are not found in viruses.

### Final Answer:
Enzymes are not found in viruses.