How many basal body rings are present in gram (+)ve cells

Options

A. `3`
B. `2`
C. `4`
D. `5`.

Answer

### Step-by-Step Solution:

1. **Understanding Basal Body Rings**:
- Basal body rings are structures associated with the flagella of bacteria. They are part of the flagellar apparatus that helps in motility.

2. **Identifying the Structure in Gram-Positive Bacteria**:
- In gram-positive bacteria, the basal body consists of two rings. These rings are embedded within the cell envelope.

3. **Location of the Rings**:
- One of the basal body rings is located in the peptidoglycan layer, which is a thick layer present in gram-positive bacteria.
- The second ring is situated in the plasma membrane.

4. **Conclusion**:
- Therefore, the total number of basal body rings present in gram-positive cells is **2**.

5. **Selecting the Correct Option**:
- Among the given options (3, 2, 4, and 5), the correct answer is **2**.

### Final Answer:
The number of basal body rings present in gram-positive cells is **2**.