NEET Exam > NEET Questions > All enzymes of the TCA cycle are located in t...
Start Learning for Free
All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme is
- a)isocitrate dehydrogenase
- b)malate dehydrogenase
- c)lactate dehydrogenase
- d)succinate dehydrogenase
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
All enzymes of the TCA cycle are located in the mitochondrial matrix, ...
Overview of the TCA Cycle
The Tricarboxylic Acid (TCA) cycle, also known as the Krebs cycle, is a crucial metabolic pathway that occurs in the mitochondrial matrix of eukaryotic cells. It plays a key role in energy production through the oxidation of acetyl-CoA.
Enzymes of the TCA Cycle
Most of the enzymes involved in the TCA cycle reside in the mitochondrial matrix, facilitating various reactions that convert substrates into energy-rich molecules.
Succinate Dehydrogenase: The Exception
- **Location**: Unlike other TCA cycle enzymes, succinate dehydrogenase is located in the inner mitochondrial membrane.
- **Function**: It catalyzes the oxidation of succinate to fumarate, while simultaneously reducing FAD to FADH2, which is an important electron carrier in the electron transport chain.
Importance of Inner Membrane Location
- **Integration with Electron Transport**: The positioning of succinate dehydrogenase in the inner mitochondrial membrane allows it to directly participate in both the TCA cycle and the electron transport chain. This dual role enhances the efficiency of ATP production.
- **Energy Yield**: The FADH2 generated by succinate dehydrogenase enters the electron transport chain, contributing to the proton gradient essential for ATP synthesis.
Conclusion
In summary, succinate dehydrogenase is unique among TCA cycle enzymes due to its location in the inner mitochondrial membrane, allowing it to bridge the TCA cycle and oxidative phosphorylation effectively. This positioning is vital for maximizing energy production in eukaryotic cells.
The Tricarboxylic Acid (TCA) cycle, also known as the Krebs cycle, is a crucial metabolic pathway that occurs in the mitochondrial matrix of eukaryotic cells. It plays a key role in energy production through the oxidation of acetyl-CoA.
Enzymes of the TCA Cycle
Most of the enzymes involved in the TCA cycle reside in the mitochondrial matrix, facilitating various reactions that convert substrates into energy-rich molecules.
Succinate Dehydrogenase: The Exception
- **Location**: Unlike other TCA cycle enzymes, succinate dehydrogenase is located in the inner mitochondrial membrane.
- **Function**: It catalyzes the oxidation of succinate to fumarate, while simultaneously reducing FAD to FADH2, which is an important electron carrier in the electron transport chain.
Importance of Inner Membrane Location
- **Integration with Electron Transport**: The positioning of succinate dehydrogenase in the inner mitochondrial membrane allows it to directly participate in both the TCA cycle and the electron transport chain. This dual role enhances the efficiency of ATP production.
- **Energy Yield**: The FADH2 generated by succinate dehydrogenase enters the electron transport chain, contributing to the proton gradient essential for ATP synthesis.
Conclusion
In summary, succinate dehydrogenase is unique among TCA cycle enzymes due to its location in the inner mitochondrial membrane, allowing it to bridge the TCA cycle and oxidative phosphorylation effectively. This positioning is vital for maximizing energy production in eukaryotic cells.
Free Test
FREE
| Start Free Test |
Community Answer
All enzymes of the TCA cycle are located in the mitochondrial matrix, ...
All enzymes of the TCA cycle are present in the mitochondrial matrix, except succinate dehydrogenase.
Succinate dehydrogenase is tightly bound to the inner mitochondrial membrane in eukaryotes and to the plasma membrane in prokaryotes.
Succinate dehydrogenase is tightly bound to the inner mitochondrial membrane in eukaryotes and to the plasma membrane in prokaryotes.
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
|
Explore Courses for NEET exam
|
|
Similar NEET Doubts
Top Courses for NEETView all
All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. Can you explain this answer?
Question Description
All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. 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 All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. Can you explain this answer?.
All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. 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 All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. Can you explain this answer?.
Solutions for All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice All enzymes of the TCA cycle are located in the mitochondrial matrix, except one which is located in inner mitochondrial membranes in eukaryotes. This enzyme isa)isocitrate dehydrogenaseb)malate dehydrogenasec)lactate dehydrogenased)succinate dehydrogenaseCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup