The site of respiration in bacteria is:

Options

A. Ribosome
B. Microsome
C. Episome
D. Mesosome

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the site of respiration in bacteria. It is important to know the structures present in bacterial cells and their functions.

2. **Identifying Bacterial Structures**: Bacteria are prokaryotic organisms, which means they lack membrane-bound organelles. The main structures to consider in bacteria are the plasma membrane, ribosomes, mesosomes, and others.

3. **Defining Mesosomes**: Mesosomes are specific structures in bacteria that are formed by the invagination (inward folding) of the plasma membrane. They can take various forms, including vesicles, tubules, and lamellae.

4. **Functions of Mesosomes**: Mesosomes have several functions:
- They assist in cell wall formation.
- They play a role in DNA replication.
- They help in the distribution of daughter cells during cell division.
- Importantly, they are involved in the respiration process.

5. **Conclusion**: Given the functions of mesosomes, particularly their involvement in respiration, we can conclude that the site of respiration in bacteria is the mesosome.

6. **Final Answer**: The site of respiration in bacteria is the **Mesosome**.

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