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Alenkinab [10]
4 years ago
10

2. How does water form during cellular respiration?

Biology
1 answer:
natka813 [3]4 years ago
6 0

Answer:

B

Explanation:

During the Krebs cycle in the matrix of the mitochondria, H+ ions are usually pumped to the intermembrane space creating a proton-motive force. This potential difference is harness by ATP synthase to make ATPs as the H+ ions 'drain' back to the matrix of the mitochondria. As these H+ get to the matrix, they ultimately reduce oxygen to water. In this reaction, oxygen also acts as the ultimate electron acceptor in the Krebs cycle accepting 4 electrons from NADPH/ NADH (so these molecules can be recycled back as NAD+ and NADP+).

4H⁺ + O₂ + 4 ⁻e → 2H₂O

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