Question

Why does the electron transport chain (etc) pump protons out of the mitochondrial matrix and into the space between the membranes?

Answer 1

The electron transport chain (etc) pump protons out of the mitochondrial matrix and into the space between the membranes because the electrons are passed to oxygen, which combines with protons to form water

What is mitochondrial matrix ?

The tricarboxylic acid (TCA) cycle, a chain of metabolic events started when pyruvate and fatty acids are converted to acetyl coenzyme A, takes place in the mitochondrial matrix (acetyl-CoA). Membrane-bound permeases move pyruvate and fatty acids from the cytoplasm into mitochondria.

What is electron transport chain?

A succession of protein complexes and other molecules form an electron transport chain when they work together to transmit protons across a membrane while also transferring electrons from electron donors to electron acceptors via redox processes. Several proteins are found in the mitochondria's inner membrane.

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