Mesosomes helps in all the the following processes except.

Options

A. Cell wall formation.
B. Synthesis and secretion of carbohydrates
C. DNA replication
D. Respiration

Answer

To solve the question regarding the functions of mesosomes, we will analyze each of the provided options to determine which process is not assisted by mesosomes.

### Step-by-Step Solution:

1. **Understanding Mesosomes**: Mesosomes are invaginations of the plasma membrane found in bacteria. They are involved in various cellular processes.

2. **Analyzing Each Option**:
- **Cell Wall Formation**: Mesosomes play a role in the formation of the cell wall. They are involved in the synthesis of peptidoglycan, which is a major component of the bacterial cell wall. Therefore, this option is incorrect as mesosomes do help in cell wall formation.

- **Synthesis and Secretion of Carbohydrates**: Mesosomes are not directly involved in the synthesis and secretion of carbohydrates. While they may assist in other secretory processes, they do not specifically facilitate carbohydrate synthesis or secretion. This option is likely the correct answer to the question.

- **DNA Replication**: Mesosomes are also involved in DNA replication. They provide a site for the attachment of the DNA during replication, thus aiding in this process. Therefore, this option is incorrect as mesosomes do assist in DNA replication.

- **Respiration**: Mesosomes contain various respiratory enzymes and are involved in cellular respiration. They increase the surface area for the attachment of these enzymes, thus facilitating respiration. Therefore, this option is incorrect as mesosomes help in respiration.

3. **Conclusion**: After analyzing all the options, the process that mesosomes do not assist in is the **synthesis and secretion of carbohydrates**.

### Final Answer:
Mesosomes help in all of the following processes except **synthesis and secretion of carbohydrates**.

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