Question

Each complex in the electron transport chain collectively acts as a _____ pump that removes H+ from the mitochondrial matrix and pumps it into the space between the inner and outer mitochondrial membranes.

Answer 1

Proton pump.

Step-by-step explanation:

The electron transport chain is the major metabolic process used in the production of ATP from NAPDH and other molecules. The electrons are transferred from one complex to another complex in the electron transport chain.

The four major complex are involved in the electron transport chain that transfer proton H+ from the mitochondrial matrix into the intermembrane space. These complexes acts as the proton pump and creates potential difference from electron transfer.This proton pump generates ATP at the end of the reaction.

Thus, the correct answer is proton pump.

Answer 2

proton pump

Step-by-step explanation:

There are four major respiratory enzyme complexes that make the electron transport chain. These complexes are complex I, II, III, IV. All these complexes collectively act as proton pump and remove the H+ from the matrix o mitochondria and pump it into intermembrane space against the concentration gradient.

This generated an electrochemical gradient between the mitochondrial matrix and intermembrane space. So when these H+ comes back in the mitochondrial matrix through ATP synthase it generates ATP from ADP. Therefore the correct answer is a proton pump.