Reduction of Oxygen to Form Water Occurs During

Question

Reduction of oxygen to form water occurs during
A)photosynthesis only.
B)respiration only.
C)both photosynthesis and respiration.
D)neither photosynthesis nor respiration.
E)photorespiration only.

Accepted Answer

Reduction of oxygen to form water occurs during respiration only. In respiration, glucose is broken down into energy, and oxygen is used as the final electron acceptor in the electron transport chain, resulting in the formation of water. Photosynthesis, on the other hand, involves the reduction of carbon dioxide to glucose, and the release of oxygen. Photorespiration involves the release of carbon dioxide, and it does not involve the reduction of oxygen to form water.