The aerobic reactions take place in the mitochondria of the cell and are divided into two stages; the Krebs cycle, which is also called the citric acid cycle and the Electron Transport Chain. During the Krebs cycle 2 ATP and 6 carbon dioxide are produced.

Video segment. Assistance may be required. Directions: Watch the following video to learn how pyruvic acid is used during the Krebs Cycle.

Test Yourself!

Interactive Exercise. Assistance may be required.

Answer the following questions, by dragging the correct term to each blank, to see what you learned about the Krebs Cycle.