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The inner membrane of mitochondria is filled with proteins and separates the matrix and intermembrane space. The matrix and intermembrane space need to be separated because an electrochemical gradient is built across the inner membrane. The electron transport chain pumps protons from the matrix, across the inner membrane, and into the intermembrane space.

How does the movement of protons from the matrix to the intermembrane space affect the pH of these separate compartments?

The pH of the matrix should
Select Option increasestay the samedecrease
and the pH of the intermembrane space should
Select Option increasestay the samedecrease
.
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