Question:
Reduced coenzyme FADH$_2$ is formed between which of the following intermediates in Krebs cycle?
Reduced coenzyme FADH$_2$ is formed between which of the following intermediates in Krebs cycle?
Show Hint
Succinate dehydrogenase is the only Krebs cycle enzyme embedded in inner mitochondrial membrane.
Updated On: Mar 6, 2026
- Isocitrate and oxalosuccinate
- Succinate and fumarate
- Malate and oxaloacetate
- Fumarate and malate
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding role of FAD.
FAD acts as a hydrogen acceptor during certain steps of the Krebs cycle.
Step 2: Specific reaction.
Succinate is oxidized to fumarate by the enzyme succinate dehydrogenase.
Step 3: Formation of FADH$_2$.
During this oxidation, FAD is reduced to FADH$_2$.
Step 4: Conclusion.
Hence, FADH$_2$ is formed between succinate and fumarate.
FAD acts as a hydrogen acceptor during certain steps of the Krebs cycle.
Step 2: Specific reaction.
Succinate is oxidized to fumarate by the enzyme succinate dehydrogenase.
Step 3: Formation of FADH$_2$.
During this oxidation, FAD is reduced to FADH$_2$.
Step 4: Conclusion.
Hence, FADH$_2$ is formed between succinate and fumarate.
Was this answer helpful?
0
0
Top MHT CET Biology Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- Important sperm lysin used for dissolving egg covering is
- In biogas plant, the role of acidogenic bacteria is to
- In $C_{3}$ plants, the first stable product of photosynthesis during the dark reaction is
- In case of anaerobic respiration, the RQ is ___________
View More Questions
Top MHT CET Photosynthesis in higher plants Questions
- In $C_{3}$ plants, the first stable product of photosynthesis during the dark reaction is
- Number of chlorophyll molecules present in a quantasome is
- Which one does not show HSK pathway ?
- Final product of HSK cycle is formed in
- Final electron acceptor in PS II during light reaction is
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions