Mesosomes help in
(A) Cell wall formation (B) DNA replication
(C) Replication (D) Secretion
(E) To increase enzymatic content

Options

A. A, B, C only
B. C, D only
C. A, C only
D. A, B, C, D, E

Answer

To solve the question regarding the function of mesosomes, we will analyze each option provided:

1. **Understanding Mesosomes**:
- Mesosomes are membrane-bound structures found in prokaryotic cells (like bacteria). They are thought to be involved in various cellular processes.

2. **Analyzing Each Option**:
- **(A) Cell wall formation**: Mesosomes are believed to play a role in the formation of the cell wall in prokaryotes. They can help in the synthesis and organization of the cell wall components.
- **(B) DNA replication**: Mesosomes are also associated with the replication of DNA in prokaryotic cells. They provide a site for the attachment of the DNA during replication.
- **(C) Replication**: This option is somewhat vague but can be interpreted as referring to the replication of cellular components or the cell itself, which mesosomes may assist with.
- **(D) Secretion**: Secretion is primarily carried out by the endoplasmic reticulum and Golgi apparatus in eukaryotic cells. Mesosomes do not play a significant role in secretion.
- **(E) To increase enzymatic content**: This function is more related to lysosomes, which contain digestive enzymes. Mesosomes do not increase enzymatic content.

3. **Conclusion**:
- Based on the analysis, options (A) and (B) are correct regarding the functions of mesosomes. Option (C) can also be considered correct if interpreted broadly. Therefore, the best answer would be **(B) DNA replication** and **(C) Replication**.

### Final Answer:
The correct answer is **(B) DNA replication** and **(C) Replication**.