Highly resistance nature of endospore is due to the presence to

Options

A. Dipicolinic acid and peptidoglycan in spore coat
B. Peptidoglycan in exosporium
C. Dipicolinic acid and Ca in cortex
D. Dipicolinic acid and Ca in cell membrane

Answer

To answer the question regarding the highly resistant nature of endospores, we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Understanding Endospores**:
- Endospores are specialized structures produced by certain bacteria, particularly in harsh environmental conditions. They serve as a means of survival for the bacteria.

2. **Resistance Features of Endospores**:
- Endospores are known for their remarkable resistance to extreme conditions such as heat, desiccation, radiation, and chemicals. This resistance is crucial for the survival of the bacteria.

3. **Key Components of Endospores**:
- The resistance of endospores is attributed to specific chemical components present within them.

4. **Dipicolinic Acid**:
- One of the primary components that contribute to the resistance of endospores is **Dipicolinic acid**. This compound plays a significant role in stabilizing the DNA and proteins within the endospore, thereby enhancing its resistance to heat and other stressors.

5. **Calcium in Cortex**:
- Additionally, the cortex of the endospore contains calcium ions, which further contribute to the structural integrity and resistance of the endospore. Calcium helps in maintaining the stability of the endospore structure.

6. **Conclusion**:
- Therefore, the highly resistant nature of endospores is due to the presence of **Dipicolinic acid** and **calcium in the cortex**.

### Final Answer:
The highly resistant nature of endospores is due to the presence of **Dipicolinic acid** and **calcium in the cortex**.

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