Question

what happens during anaerobic cellular respiration?

Explanation:

Anaerobic cellular respiration occurs without oxygen. It starts with glycolysis (breaking down glucose). Then, there's fermentation. In lactic acid fermentation (e.g., in some bacteria and animal muscle cells), pyruvate is converted to lactic acid. In alcoholic fermentation (e.g., in yeast), pyruvate is converted to ethanol and carbon dioxide. These processes regenerate NAD+ so glycolysis can continue, producing a small amount of ATP (energy).

Answer:

During anaerobic cellular respiration, glucose is partially broken down (via glycolysis), and then fermentation (lactic acid or alcoholic) occurs to regenerate NAD+ and produce a small amount of ATP (energy) without using oxygen.