Assertion : Oxidoreductases catalyze redox reactions .
Reason : Isomerases catalyze the isomeric changes.

Options

A. If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion is true but the Reason is false.
D. If both Assertion and Reason are false.

Answer

To solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Analyze the Assertion
- **Assertion**: "Oxidoreductases catalyze redox reactions."
- **Explanation**: Oxidoreductases are a class of enzymes that facilitate oxidation-reduction (redox) reactions. These reactions involve the transfer of electrons between molecules, which can include the addition of oxygen or the removal of hydrogen. Therefore, the assertion is true.

### Step 2: Analyze the Reason
- **Reason**: "Isomerases catalyze the isomeric changes."
- **Explanation**: Isomerases are enzymes that catalyze the conversion of a molecule into its isomers, which are compounds with the same molecular formula but different structural arrangements. This statement is also true.

### Step 3: Determine the Relationship Between Assertion and Reason
- While both statements are true, the reason does not explain the assertion. The assertion discusses the function of oxidoreductases, while the reason discusses isomerases, which are unrelated to the function of oxidoreductases.

### Conclusion
- Both the assertion and reason are true statements, but the reason does not serve as a correct explanation for the assertion. Therefore, the correct answer is that both statements are true, but the reason is not the correct explanation for the assertion.

### Final Answer
- The correct answer is: Both the assertion and reason are true, but the reason is not the correct explanation of the assertion.

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