Question at position 93 The final electron acceptor in aerobic cellular respiration is:FADH2NADHO2CO2

Question

BlackTom AI · Accepted Answer

The question concerns the final electron acceptor in aerobic cellular respiration, so we should evaluate each option in that context.
Option: FADH2. This is an electron carrier produced during the citric acid cycle and at certain steps of glycolysis and the respiratory chain; it donates electrons but is not the final acceptor itself. Therefore this choice is incorrect as the ultimate recipient of electrons is not FADH2.
Option: NADH. Similar to FADH2, NADH is an electron carrier that delivers electrons to the electron transport chain, but it is not the final acceptor. It is oxidized to NAD+ after its electrons are transferred. Thus this option is also incorrect as the ultimate sink of electrons remains unaddressed here.
Option: O2. In aerobic respiration, electrons flow through the electron transport chain and ultimately reduce molecular oxygen (O2) to water (H2O). Oxygen serves as the final electron acceptor, accepting electrons and protons at the end of the chain. This makes O2 the correct choice for the final electron acceptor.
Option: CO2. Carbon dioxide is produced as a waste product during the oxidation of acetyl-CoA in the citric acid cycle and does not act as an electron sink. It is not the final electron acceptor. Therefore this option is incorrect.
Putting the pieces together, only O2 fulfills the role of the terminal electron acceptor in aerobic respiration, while the other options function as carriers or byproducts rather than the final acceptor.

Question at position 93 The final electron acceptor in aerobic cellular respiration is:FADH2NADHO2CO2

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Question at position 93 The final electron acceptor in aerobic cellular respiration is:FADH2NADHO2CO2

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Similar Questions

Question at position 3 Aerobic respiration is the way that we:produce CO2 from O2make ATP from CO2produce O2 from CO2synthesize glucoseget chemical energy from our food

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