Which is the final electron acceptor in the electron transport system of cellular respiration? nadh fadh2 oxygen carbon dioxide

The right answer is Oxygen.

The respiratory chain transports both protons and electrons. The latter circulate from donors to electron acceptors, while the protons circulate through the membrane. These processes use transfer molecules some of which are soluble while others are linked to proteins.

O2 molecular oxygen is a strong oxidizer, making it an excellent final acceptor of electrons.

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b. the carbon cycle ensures living things have a source of hydrogen