Succinate is converted into fumarate by the removal of:
Correct answer: C. Two hydrogen atoms
- A. A single hydrogen atom
- B. CO2 molecule
- C. Two hydrogen atoms
- D. Water molecule
Explanation
In the Krebs cycle, succinate is converted to fumarate by the enzyme succinate dehydrogenase. This reaction involves the removal of two hydrogen atoms from succinate, which are then transferred to FAD to form FADH₂. Thus, option C is correct. Options A, B, and D are incorrect because they do not accurately describe the chemical changes occurring during this specific step of the Krebs cycle.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Bioenergetics
Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.
Practise Bioenergetics
1,378 free Bioenergetics MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Bioenergetics questions
FAD is reduced to get FADH₂ in a step of the Krebs cycle, which involves the conversion of:
In the Krebs cycle, for the formation of α-ketoglutarate, the following changes occur, EXCEPT:
In the first step of the Krebs cycle, the following changes occur, EXCEPT:
Rearrangement followed by a second ATP phosphorylation involves step no. _ of glycolysis.
In glycolysis, the six-carbon molecule is split into G3P and DAP, then DAP is also converted into G3P in step no. _.
In glycolysis, oxidation followed by phosphorylation produces two NADH molecules and two molecules of BPG in step no: