All are electron transport intermediates except:
Correct answer: C. Ferredoxin
- A. Cytochrome
- B. Coenzyme Q
- C. Ferredoxin
- D. Flavoproteins
Explanation
Most electron transport intermediates in mitochondria include cytochromes, coenzyme Q, and flavoproteins, all of which play essential roles in transferring electrons along the electron transport chain to ultimately produce ATP. Cytochromes contain heme groups that alternate between reduced and oxidized states, coenzyme Q is a lipid-soluble carrier that shuttles electrons between complexes, and flavoproteins use flavin nucleotides to transfer electrons from NADH or succinate to coenzyme Q. Ferredoxin, however, is not part of the mitochondrial electron transport chain; it functions in photosynthesis in chloroplasts, making it the exception among these options.
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.