Biology

Question

Lactic acid fermentation is anaerobic.

This occurs when our body switched

from aerobic respiration to anaerobic

respiration.

What causes lactic acid fermentation?

A. an upset stomach

B. too little oxygen

C. too many mitochondria

D. too much oxygen

Answer

B. too little oxygen

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Lactic acid fermentation occurs when there is not enough oxygen available for aerobic respiration. During this process, pyruvate, which is produced during glycolysis, is converted into lactic acid. This process allows for the regeneration of NAD+ so that glycolysis can continue to produce ATP. Lactic acid fermentation is commonly observed in muscle cells during intense exercise when the demand for ATP exceeds the supply of oxygen.