The Mitochondrion

Cellular respiration begins in the cytoplasm with Glycolysis.  Glycolysis produces some ATP and NADH as well as two molecules of pyruvic acid.  The two pyruvic acid molecules pass through protein channels in the outer and inner membranes of the mitochondrion.

Pyruvic acid is oxidized in the matrix and then enters the Krebs Cycle.

 

The energy harvested in the matrix reactions (NADH and FADH2) is transferred to the electron transport chain in the inner membrane.  This is where most of the ATP is manufactured by chemiosmosis.
 
Reproduction without permission is strictly prohibited.
© Copyright 2002 Terry Brown. All rights reserved.