EVERYDAY SCIENCE

Detailed explanation-1: -Muscle cells can continue to produce ATP when oxygen runs low using lactic acid fermentation. However, this often results in muscle fatigue and pain. Many yeast use alcoholic fermentation to produce ethanol.

Detailed explanation-2: -Fermentation does not require oxygen and is therefore anaerobic. Fermentation will replenish NAD+ from the NADH + H+ produced in glycolysis.

Detailed explanation-3: -4: Lactic acid fermentation makes ATP in the absence of oxygen by converting glucose to lactic acid (through a pyruvate intermediate). Making lactic acid from pyruvate oxidizes NADH, regenerating NAD+ so that glycolysis can continue to make more ATP rapidly.

Detailed explanation-4: -Lactic acid, also known as lactate, is a substance the body produces mainly by the breakdown of glucose under anaerobic conditions (i.e., without oxygen), like anaerobic glycolysis.

Detailed explanation-5: -Lactic acid fermentation happens in the skeletal muscles. Pyruvate is converted to lactic acid by lactate dehydrogenase when oxygen is inadequate. Fatigue is brought on by lactic acid buildup in the muscles. It is a sort of anaerobic fermentation that takes place in bacterial and animal cells, such as muscle cells.