AP BIOLOGY

Detailed explanation-1: -This may occur when your muscle cells use lactic acid fermentation to provide ATP for energy. The buildup of lactic acid in the muscles causes the feeling of burning.

Detailed explanation-2: -Lactic acid is mainly produced in muscle cells and red blood cells. It forms when the body breaks down carbohydrates to use for energy when oxygen levels are low. Times when your body’s oxygen level might drop include: During intense exercise.

Detailed explanation-3: -Fermentation in muscle cells produces a waste product called lactic acid. The temporary buildup of lactic acid in muscle cells contributes to the fatigue you feel during and after a long run or a set of push-ups. Your body consumes oxygen as it converts the lactic acid back to pyruvic acid.

Detailed explanation-4: -Muscle cells also carry out lactic acid fermentation, though only when they have too little oxygen for aerobic respiration to continue-for instance, when you’ve been exercising very hard.