Assertion : Glycolysis takes place in the cytoplasm and produces only 2 ATP and 2 NADH.
Reason : Glycolysis is anaerobic process and cannot oxidise the substrate fully.

Options

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

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Assertion**: The assertion states that glycolysis occurs in the cytoplasm and produces only 2 ATP and 2 NADH. This is correct because glycolysis is indeed a metabolic pathway that takes place in the cytoplasm of the cell. During this process, glucose is broken down into pyruvate, and in the process, 2 ATP molecules and 2 NADH molecules are produced.

2. **Understanding the Reason**: The reason provided states that glycolysis is an anaerobic process and cannot oxidize the substrate fully. This is also true. Glycolysis does not require oxygen (anaerobic) and only partially oxidizes glucose to pyruvate, which means that the substrate (glucose) is not fully oxidized to carbon dioxide and water as it would be in aerobic respiration.

3. **Evaluating the Relationship**: The assertion is true, and the reason is also true. Furthermore, the reason explains why the assertion is true. Glycolysis being anaerobic and not fully oxidizing the substrate supports the assertion about the production of only 2 ATP and 2 NADH.

4. **Conclusion**: Both the assertion and the reason are true, and the reason is a correct explanation of the assertion. Therefore, the correct answer is that both assertion and reason are true, and the reason is a correct explanation of the assertion.

**Final Answer**: Both assertion and reason are true, and reason is a correct explanation of assertion.

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