CELL RESPIRATION
OXIDATIVE PHOSPHORYLATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cytochrome b
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FMN
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Oxygen
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Coenzyme Q
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Detailed explanation-1: -Which one of the following components of the electron transport chain only accepts electrons, and does not donate them? The answer is B. Aerobic metabolism requires an O2 supply.
Detailed explanation-2: -Under physiological conditions, oxygen is the terminal electron acceptor in the electron transport chain, and water will not donate electrons to other substrates to regener-ate oxygen.
Detailed explanation-3: -Which of the following components of the electron transport chain passes electrons to O2 and causing it to be reduced to H2O? Complex IV or cytochrome c oxidase completes the electron transport chain and passes electrons to O2.
Detailed explanation-4: -NADH and FADH2 carry high-energy electrons to the electron transport chain in cellular respiration.
Detailed explanation-5: -Cytochrome C passes the electrons to Complex IV, which then passes them to oxygen in the matrix, forming water. It takes two electrons, 1/2 O2, and 2 H+ to form one water molecule.