EVERYDAY SCIENCE

Detailed explanation-1: -Muscle cells can continue to produce ATP when oxygen runs low using lactic acid fermentation.

Detailed explanation-2: -So what occurs when your body runs out of oxygen or your other systems simply can’t deliver it to your muscles quickly enough? Your muscles begin converting glucose into lactic acid instead of energy, anaerobic exercise takes over, power output drops and fatigue sets in.

Detailed explanation-3: -Human muscle cells also use fermentation. This occurs when muscle cells cannot get oxygen fast enough to meet their energy needs through aerobic respiration. There are two types of fermentation: lactic acid fermentation and alcoholic fermentation.

Detailed explanation-4: -Anaerobic ATP Production When muscles are contracting very quickly, which happens during vigorous exercise, oxygen cannot travel to the muscle cells fast enough to keep up with the muscles’ need for ATP. At this point, muscle fibers can switch to a breakdown process that does not require oxygen.

Detailed explanation-5: -Without oxygen, some human cells must use fermentation to produce ATP, and this process produces only two molecules of ATP per molecule of glucose.