Biochemistry 0 Views 1 Answers
Which statement describes the electron transport chain? This process joins 2 pyruvic acid molecules into a molecule of glucose. This process converts pyruvic acid to acetyl CoA. This process splits glucose in half and produces 2 ATPs for each glucose. This process produces some ATP and carbon dioxide in the mitochondrion. This process uses energy captured from electrons flowing to oxygen to produce most of the ATPs in cellular respiration.
Which statement describes the electron transport chain?
- This process joins 2 pyruvic acid molecules into a molecule of glucose.
- This process converts pyruvic acid to acetyl CoA.
- This process splits glucose in half and produces 2 ATPs for each glucose.
- This process produces some ATP and carbon dioxide in the mitochondrion.
- This process uses energy captured from electrons flowing to oxygen to produce most of the ATPs in cellular respiration.
Answered step-by-step
The correct statement is:
This process uses energy captured from electrons flowing to oxygen to produce most of the ATPs in cellular respiration.
Explanation:
The electron transport chain (ETC) is the final stage of cellular respiration, where high-energy electrons, carried by NADH and FADH2, are passed through a series of protein complexes. These electrons eventually combine with oxygen to form water. The energy released from the electrons as they move through the chain is used to pump protons across the mitochondrial membrane, creating a proton gradient. This gradient powers ATP synthase, which produces most of the ATP in cellular respiration through oxidative phosphorylation.
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