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How many points are there in the TCA cycle where NAD+ is reduced?
- a)One
- b)Two
- c)Four
- d)Three
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
How many points are there in the TCA cycle where NAD+is reduced?a)Oneb...
There are three points in the TCA cycle where NAD+ is reduced to NADH + H+ and one point where FAD+ is reduced to FADH2. In a coupled reaction GTP is converted to GDP with the simultaneous synthesis of ATP from ADP.
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How many points are there in the TCA cycle where NAD+is reduced?a)Oneb...
Explanation:
Points in the TCA cycle where NAD+ is reduced:
- The TCA cycle, also known as the citric acid cycle, is a series of chemical reactions that generate energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.
- NAD+ (nicotinamide adenine dinucleotide) is a coenzyme that plays a crucial role in the TCA cycle by accepting electrons and protons to become NADH.
- There are three points in the TCA cycle where NAD+ is reduced to NADH:
1. Isocitrate Dehydrogenase Reaction: In this step, isocitrate is oxidized to alpha-ketoglutarate, and NAD+ is reduced to NADH.
2. Alpha-Ketoglutarate Dehydrogenase Complex Reaction: Alpha-ketoglutarate is oxidized to succinyl-CoA, and NAD+ is again reduced to NADH.
3. Malate Dehydrogenase Reaction: Malate is oxidized to oxaloacetate, and NAD+ is once more reduced to NADH.
- Therefore, there are a total of three points in the TCA cycle where NAD+ is reduced to NADH. This reduction of NAD+ to NADH is essential for the generation of ATP through oxidative phosphorylation in the electron transport chain.
Points in the TCA cycle where NAD+ is reduced:
- The TCA cycle, also known as the citric acid cycle, is a series of chemical reactions that generate energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.
- NAD+ (nicotinamide adenine dinucleotide) is a coenzyme that plays a crucial role in the TCA cycle by accepting electrons and protons to become NADH.
- There are three points in the TCA cycle where NAD+ is reduced to NADH:
1. Isocitrate Dehydrogenase Reaction: In this step, isocitrate is oxidized to alpha-ketoglutarate, and NAD+ is reduced to NADH.
2. Alpha-Ketoglutarate Dehydrogenase Complex Reaction: Alpha-ketoglutarate is oxidized to succinyl-CoA, and NAD+ is again reduced to NADH.
3. Malate Dehydrogenase Reaction: Malate is oxidized to oxaloacetate, and NAD+ is once more reduced to NADH.
- Therefore, there are a total of three points in the TCA cycle where NAD+ is reduced to NADH. This reduction of NAD+ to NADH is essential for the generation of ATP through oxidative phosphorylation in the electron transport chain.
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How many points are there in the TCA cycle where NAD+is reduced?a)Oneb)Twoc)Fourd)ThreeCorrect answer is option 'D'. Can you explain this answer?
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How many points are there in the TCA cycle where NAD+is reduced?a)Oneb)Twoc)Fourd)ThreeCorrect answer is option 'D'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about How many points are there in the TCA cycle where NAD+is reduced?a)Oneb)Twoc)Fourd)ThreeCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How many points are there in the TCA cycle where NAD+is reduced?a)Oneb)Twoc)Fourd)ThreeCorrect answer is option 'D'. Can you explain this answer?.
How many points are there in the TCA cycle where NAD+is reduced?a)Oneb)Twoc)Fourd)ThreeCorrect answer is option 'D'. Can you explain this answer? for NEET 2025 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about How many points are there in the TCA cycle where NAD+is reduced?a)Oneb)Twoc)Fourd)ThreeCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for How many points are there in the TCA cycle where NAD+is reduced?a)Oneb)Twoc)Fourd)ThreeCorrect answer is option 'D'. Can you explain this answer?.
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