Read the following cell processes. In how many of them are mesosomes involves ?
( Respiration ,Secretion , DNA replication , cell wall formation, Resistance of antibiotics , protection )

Options

A. Five
B. Three
C. Four
D. Six

Answer

To determine how many processes involve mesosomes, let's analyze each of the given processes step by step.

### Step 1: Understand what mesosomes are
Mesosomes are invaginations or folds of the plasma membrane found in prokaryotic cells. They play various roles in cellular functions.

### Step 2: Analyze each process
1. **Respiration**: Mesosomes increase the surface area for respiration and contain enzymes involved in this process.
- **Involvement**: Yes

2. **Secretion**: Mesosomes assist in the transport of molecules in and out of the cell, thus playing a role in secretion.
- **Involvement**: Yes

3. **DNA Replication**: Mesosomes contain enzymes that are involved in DNA replication, making them important for this process.
- **Involvement**: Yes

4. **Cell Wall Formation**: Mesosomes are involved in the synthesis of the cell wall in prokaryotes.
- **Involvement**: Yes

5. **Resistance of Antibiotics**: This function is not associated with mesosomes. Resistance is typically due to genes located on plasmids, not mesosomal activity.
- **Involvement**: No

6. **Protection**: Mesosomes do not provide protection; this function is primarily provided by the cell wall.
- **Involvement**: No

### Step 3: Count the processes involving mesosomes
From the analysis:
- Processes involving mesosomes: Respiration, Secretion, DNA Replication, Cell Wall Formation (4 processes).
- Processes not involving mesosomes: Resistance of Antibiotics, Protection (2 processes).

### Conclusion
In total, mesosomes are involved in **4 processes**.