Assertion : Specific substrate binds at the active site of the enzyme .
Reason : Enzymes increase the activation energy of substrate .

Options

A. If both assertion and Reason are true and the Reason is the correct explanation of the assertion .
B. If both Assertion and Reason ate true , but the reason is not the correct explanation of the assertion .
C. If Assertion is true , but Reason is false
D. if both Assertion and Reason are false.

Answer

To solve the question, we need to evaluate the assertion and the reason provided:

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that a specific substrate binds at the active site of the enzyme.
- This is true. Enzymes have specific active sites that are complementary in shape to their substrates, allowing for precise binding.

2. **Understanding the Reason**:
- The reason states that enzymes increase the activation energy of the substrate.
- This is false. Enzymes actually lower the activation energy required for a reaction to occur, which speeds up the reaction rate.

3. **Evaluating the Relationship**:
- The assertion is true, but the reason is false. Therefore, the reason does not correctly explain the assertion.

4. **Conclusion**:
- The final answer is that the assertion is true, but the reason is false.

### Final Answer:
- Assertion: True
- Reason: False