Movement of ten electrons from mitochondrial NADH molecules produces ____ water molecules.

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Solution

The correct option is D 5
The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and $F A D H_{2}$ to molecular oxygen. In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water. Here, one water molecule is formed by two electrons. So, we can say that ten electrons from mitochondrial NADH molecules produces 5 water molecules.
So, the correct option is D.

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