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What Happens to Electrons at the End of the Chain
publish date: 2026/06/21 09:14:17.247266 UTC
At the end of the electron transport chain, electrons are accepted by (1) atoms, which combine with hydrogen ions to produce (2).
Please drag and drop the selected option in the right place or type it instead
carbon dioxide
nitrogen
water
oxygen
Correct Answer
(1) oxygen
(2) water
Explanation
At the very end of the electron transport chain, oxygen atoms accept the passed electrons and combine with hydrogen ions to form water, completing the simplified aerobic respiration equation: glucose plus oxygen yields carbon dioxide, water, and energy.
Reference
Biology: A self-teaching guide