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KEY CONCEPT Fermentation allows the production of a small amount of ATP without oxygen.

Explore how fermentation enables glycolysis and ATP production when oxygen is not available. Learn about lactic acid and alcoholic fermentation processes and their significance in cellular respiration and food production.

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KEY CONCEPT Fermentation allows the production of a small amount of ATP without oxygen.

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  1. KEY CONCEPT Fermentation allows the production of a small amount of ATP without oxygen.

  2. Fermentation allows glycolysis to continue. • Fermentation allows glycolysis to continue making ATP when oxygen is unavailable. • Fermentation is an anaerobic process. • occurs when oxygen is not available for cellular respiration • does not produce ATP

  3. Lactic acid fermentationoccurs in muscle cells of animals. • glycolysis splits glucose into two pyruvate molecules • pyruvate and NADH enter fermentation • energy from NADH converts pyruvate into lactic acid • NADH is changed back into NAD+ Sequence: Which process must happen first, fermentation or glycolysis? Explain.

  4. Fermentation and its products are important in several ways. • Alcoholic fermentation is similar to lactic acid fermentation. • glycolysis splits glucose and the products enter fermentation • energy from NADH is used to split pyruvate into an alcohol and carbon dioxide • NADH is changed back into NAD+ • NAD+ is recycled to glycolysis

  5. Fermentation and its products are important in several ways. • Fermentation is used in food production. • yogurt • cheese • bread How are alcoholic fermentation and lactic acid fermentation similar? Different?

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