Cellular Respiration Part 2: The Citric Acid Cycle

The video tutorial explains the citric acid cycle, starting with glycolysis, an anaerobic process that allowed early organisms to generate energy. As oxygen became abundant due to photosynthesis, aerobic respiration evolved, occurring in mitochondria. The video details the conversion of pyruvate to acetyl-CoA and the eight steps of the citric acid cycle, highlighting the enzymes involved. The cycle produces NADH, FADH2, and ATP, which are crucial for oxidative phosphorylation, the main ATP-generating process in aerobic respiration.

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