Electron Transport chain & Chemiosmosis

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Last updated 5:44 PM on 2/7/26
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6 Terms

1
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what is the elctron transport chain (ETC)?

A series of four protein complexes in the inner mitochondrial membrane that pass electrons and use their energy to pump H⁺ ions

2
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What molecules donate electrons to the etc?

NADH and FADH

3
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What happens to electrons as they move through the ETC?

They lose energy, which is used to pump hydrogen ions H⁺ into the intermembrane space

4
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What is the final electron acceptor in aerobic respiration

Oxygen O2

5
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What forms when oxygen accepts electrons and hydrogen ions?

Water H2O

6
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What happens if oxygen is not present

The ETC (Electron transport chain) backs up and stop, atp production stops and the cells die