The mitochondrial electron transport chain a. is the site of most of the reactions of the citric acid cycle. b. synthesizes atp. c. pumps protons into the mitochondrial matrix during electron transport. d. oxidizes water to o2 and 2 h . e. oxidizes the intermediate electron carriers, nadh and fadh2.

c pump protons into the mitochondrial matrix during electron transport

Explanation: the movement of electrons from one protein carrier to another of different energy

Levels generated ENERGY. This is the quantity of energy needed to pump protons from the matix of the mitochondrial ithrough the inner intramembrane to the cystosol,to returm back to the matrix for ATP synthsis. Therefore protons concentration gradients build up

Hydrogen ions/protons move down the gradients through the proton channels of rhe ATPase synthase .

The latter extracted energy from the protons as it pass through it to phosphorylate ADP to form ATP.

ADP + Pi === ATP.

Therefore ,the electron transport chain generated energy for proton

Explanation:

nucleus

would be most reasonable answer tbh

c. heat from the poles back down towards the equator.