Which statement describes the electron transport chain?

Question

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• This process joins 2 pyruvic acid molecules into a molecule of glucose.
• This process produces some ATP and carbon dioxide in the mitochondrion.
• This process converts pyruvic acid to acetyl CoA.
• This process splits glucose in half and produces 2 ATPs for each glucose.
This process uses energy captured from electrons flowing to oxygen to produce most of the ATPs

Answer 1

The statement that describes the electron transport chain is:

"This process uses energy captured from electrons flowing to oxygen to produce most of the ATPs."

The electron transport chain is a series of protein complexes located in the inner mitochondrial membrane that transfer electrons from electron donors (like NADH and FADH2) to oxygen. This process generates a proton gradient that drives ATP synthesis via ATP synthase, producing the majority of ATP during cellular respiration.