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Classify: Krebs Cycle or Electron Transport Chain

publish date: 2026/06/21 09:14:18.377108 UTC

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Sort each description into the correct stage of aerobic respiration

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Correct Answer

(1) Acetyl-CoA enters here,Krebs cycle
(2) Produces NADH and FADH2,Krebs cycle
(3) Cytochromes pass electrons stepwise,Electron transport chain
(4) Final electron acceptor is oxygen, forming water,Electron transport chain

Explanation

The Krebs cycle breaks down acetyl-CoA and produces electron carriers (NADH, FADH2) along with some ATP. Those electron carriers then feed into the electron transport chain, where cytochromes pass electrons stepwise until they're finally accepted by oxygen, forming water.

Reference

Biology: A self-teaching guide

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