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Khan Academy provides an overview of the steps involved in cellular respiration, including glycolysis, pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation.
Dive into glycolysis and gluconeogenesis, and understand when each pathway dominates. Discover how the body maintains this balance using fast-acting regulation like Le Chatelier's Principle and slow-acting regulation through transcriptional changes.
Fermentation and cellular respiration begin the same way, with glycolysis. In fermentation, however, the pyruvate made in glycolysis does not continue through oxidation and the citric acid cycle, and the electron transport chain does not run.
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Overview of the Krebs or citric acid cycle, which is a series of reactions that takes in acetyl CoA and produces carbon dioxide, NADH, FADH2, and ATP or GTP.