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Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:
- a)Breakdown of electron gradient
- b)Movement of protons across the membrane to the stroma
- c)Reduction of NADP to NADPH2 on the stroma side of the membrane
- d)Breakdown of proton gradient
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Which one of the following is not true regarding the release of energy...
Overview: The release of energy during ATP synthesis through chemiosmosis involves the movement of protons across the membrane to the stroma, the reduction of NADP to NADPH2 on the stroma side of the membrane, and the breakdown of the proton gradient. However, it does not involve the breakdown of the electron gradient.
Explanation:
Chemiosmosis:
- Chemiosmosis is a process that occurs during oxidative phosphorylation in the mitochondria or photosynthesis in chloroplasts.
- It involves the movement of protons (H+) across a membrane, creating a proton gradient.
- The energy released from the flow of protons through ATP synthase is used to synthesize ATP.
ATP Synthesis:
- ATP synthesis occurs in the thylakoid membrane during photosynthesis in chloroplasts.
- Light energy is absorbed by chlorophyll, leading to the excitation of electrons.
- The excited electrons are passed through a series of electron carriers, creating an electron gradient.
- This electron gradient is used to generate a proton gradient across the thylakoid membrane.
Incorrect statement:
- The breakdown of the electron gradient is not involved in the release of energy during ATP synthesis through chemiosmosis.
- The electron gradient is maintained and utilized during the process to generate ATP.
- The breakdown of the electron gradient would disrupt the flow of electrons and hinder ATP production.
Correct statements:
- Movement of protons across the membrane to the stroma: During chemiosmosis, protons are pumped across the thylakoid membrane from the thylakoid lumen to the stroma. This creates a proton gradient.
- Reduction of NADP to NADPH2 on the stroma side of the membrane: The proton gradient generated during chemiosmosis is used to power the synthesis of NADPH2, which is an energy-rich molecule used in the Calvin cycle.
- Breakdown of proton gradient: The flow of protons back across the membrane through ATP synthase allows for the synthesis of ATP. This breakdown of the proton gradient releases energy that is used to convert ADP to ATP.
Conclusion:
The breakdown of the electron gradient is not involved in the release of energy during ATP synthesis through chemiosmosis. The other statements, including the movement of protons across the membrane to the stroma, the reduction of NADP to NADPH2 on the stroma side of the membrane, and the breakdown of the proton gradient, are true.
Explanation:
Chemiosmosis:
- Chemiosmosis is a process that occurs during oxidative phosphorylation in the mitochondria or photosynthesis in chloroplasts.
- It involves the movement of protons (H+) across a membrane, creating a proton gradient.
- The energy released from the flow of protons through ATP synthase is used to synthesize ATP.
ATP Synthesis:
- ATP synthesis occurs in the thylakoid membrane during photosynthesis in chloroplasts.
- Light energy is absorbed by chlorophyll, leading to the excitation of electrons.
- The excited electrons are passed through a series of electron carriers, creating an electron gradient.
- This electron gradient is used to generate a proton gradient across the thylakoid membrane.
Incorrect statement:
- The breakdown of the electron gradient is not involved in the release of energy during ATP synthesis through chemiosmosis.
- The electron gradient is maintained and utilized during the process to generate ATP.
- The breakdown of the electron gradient would disrupt the flow of electrons and hinder ATP production.
Correct statements:
- Movement of protons across the membrane to the stroma: During chemiosmosis, protons are pumped across the thylakoid membrane from the thylakoid lumen to the stroma. This creates a proton gradient.
- Reduction of NADP to NADPH2 on the stroma side of the membrane: The proton gradient generated during chemiosmosis is used to power the synthesis of NADPH2, which is an energy-rich molecule used in the Calvin cycle.
- Breakdown of proton gradient: The flow of protons back across the membrane through ATP synthase allows for the synthesis of ATP. This breakdown of the proton gradient releases energy that is used to convert ADP to ATP.
Conclusion:
The breakdown of the electron gradient is not involved in the release of energy during ATP synthesis through chemiosmosis. The other statements, including the movement of protons across the membrane to the stroma, the reduction of NADP to NADPH2 on the stroma side of the membrane, and the breakdown of the proton gradient, are true.
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Community Answer
Which one of the following is not true regarding the release of energy...
During ATP synthesis through chemiosmosis, an electron gradient is established across the membrane by the electron transport chain. This gradient is used to drive the movement of protons (H+) across the membrane, which then powers ATP synthesis. The breakdown of the electron gradient is not involved in the release of energy during ATP synthesis through chemiosmosis. Instead, it is the movement of protons across the membrane that drives ATP synthesis.
Therefore, the statement that is not true regarding the release of energy during ATP synthesis through chemiosmosis is (a) Breakdown of the electron gradient.
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Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:a)Breakdown of electron gradientb)Movement of protons across the membrane to the stromac)Reduction of NADP to NADPH2 on the stroma side of the membraned)Breakdown of proton gradientCorrect answer is option 'A'. Can you explain this answer?
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Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:a)Breakdown of electron gradientb)Movement of protons across the membrane to the stromac)Reduction of NADP to NADPH2 on the stroma side of the membraned)Breakdown of proton gradientCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:a)Breakdown of electron gradientb)Movement of protons across the membrane to the stromac)Reduction of NADP to NADPH2 on the stroma side of the membraned)Breakdown of proton gradientCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:a)Breakdown of electron gradientb)Movement of protons across the membrane to the stromac)Reduction of NADP to NADPH2 on the stroma side of the membraned)Breakdown of proton gradientCorrect answer is option 'A'. Can you explain this answer?.
Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:a)Breakdown of electron gradientb)Movement of protons across the membrane to the stromac)Reduction of NADP to NADPH2 on the stroma side of the membraned)Breakdown of proton gradientCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:a)Breakdown of electron gradientb)Movement of protons across the membrane to the stromac)Reduction of NADP to NADPH2 on the stroma side of the membraned)Breakdown of proton gradientCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:a)Breakdown of electron gradientb)Movement of protons across the membrane to the stromac)Reduction of NADP to NADPH2 on the stroma side of the membraned)Breakdown of proton gradientCorrect answer is option 'A'. Can you explain this answer?.
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