Learn about the citric acid cycle in cellular respiration and its role in energy production.

Khan Academy provides an overview of the steps involved in cellular respiration, including glycolysis, pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation.

Learn about fermentation and anaerobic respiration in the context of AP Biology on Khan Academy.

Glycolysis is the process of breaking down glucose to produce energy.

Learn about oxidative phosphorylation and the electron transport chain in cellular respiration on Khan Academy.

This article explains the process of oxidative phosphorylation and the electron transport chain in cellular respiration.

Explanation of the Calvin cycle in photosynthesis, including its stages and importance in converting carbon dioxide into glucose.

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Learn about the light-dependent reactions in photosynthesis and how they convert solar energy into chemical energy.

Learn about amino acid metabolism in this Khan Academy video.