Final electron acceptor in respiratory chain is:
Correct answer: B. Oxygen
- A. Cytochrome A
- B. Oxygen
- C. Cytochrome a3
- D. Cytochrome C
Explanation
The final acceptor of electrons in the respiratory chain is oxygen (O2). During oxidative phosphorylation, which is the last stage of cellular respiration, electrons are transferred through a series of protein complexes in the inner mitochondrial membrane (or the plasma membrane in prokaryotes). This process is part of the electron transport chain.
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
Every molecule of NADH, fed into ETC produces:
Pyruvate, the end product of glycolysis moves from cytosol to mitochondrial matrix where it is oxidized into _ producing CO2 as a by-product.
Which one of the following is the stage of cellular respiration for which oxygen is not essential:
The end product of anaerobic respiration in humans and other mammals is:
A biochemical process which occurs within a cell to breakdown complex compounds to produce energy is called:
Which part of the chlorophyll molecule absorbs light?