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[A] : During catabolism of food through ...

[A] : During catabolism of food through Krebs cycle, energy is generated by ETS.
[R]: Energy is released from electrons, as they pass along a series of reactions

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze the assertion and reason provided: **Assertion (A)**: During catabolism of food through the Krebs cycle, energy is generated by the electron transport system (ETS). **Reason (R)**: Energy is released from electrons as they pass along a series of reactions. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The Krebs cycle, also known as the citric acid cycle, is a key metabolic pathway that generates energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins. - The electron transport system (ETS) is a series of protein complexes located in the inner mitochondrial membrane (in eukaryotes) or the plasma membrane (in prokaryotes) that transfers electrons derived from the Krebs cycle. 2. **Understanding the Reason**: - As electrons are transferred through the ETS, they release energy. This energy is used to pump protons (H⁺ ions) across the membrane, creating a proton gradient. - The flow of protons back across the membrane through ATP synthase drives the production of ATP, which is the main energy currency of the cell. 3. **Evaluating the Truth of the Statements**: - Both the assertion and reason are true. The assertion correctly states that energy is generated by the ETS during the Krebs cycle, and the reason accurately describes how energy is released from electrons during this process. 4. **Determining the Relationship**: - The reason (R) provides a correct explanation for the assertion (A). The energy generation in the ETS is indeed due to the release of energy from electrons as they move through the system. 5. **Conclusion**: - Since both the assertion and reason are true, and the reason is the correct explanation for the assertion, the correct option is **A**: Both Assertion and Reason are true, and Reason is the correct explanation of Assertion. ### Final Answer: The correct option is **A**: Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
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