12.4 Anaerobic respiration

• In anaerobic respiration in plants/microorganisms like yeast, the pyruvate is converted into ethanol and carbon dioxide.
• In anaerobic respiration in animals, the pyruvate is converted into lactate.
• In anaerobic respiration, pyruvate is converted into either ethanol or lactate. Therefore, it is not available for the Krebs Cycle. Consequently, the electron transfer chain cannot occur either. Therefore, ATP can only be formed via glycolysis in anaerobic respiration.