AP BIOLOGY

Detailed explanation-1: -The first step of anaerobic respiration is glycolysis, in which a glucose molecule is broken down into two pyruvate molecules, releasing electrons in the process and producing two ATP molecules, the energy of the cells.

Detailed explanation-2: -Glycolysis is the process by which glucose is broken down within the cytoplasm of a cell to form pyruvate.

Detailed explanation-3: -When oxygen is not present or if an organism is not able to undergo aerobic respiration, pyruvate will undergo a process called fermentation. Fermentation does not require oxygen and is therefore anaerobic. Fermentation will replenish NAD+ from the NADH + H+ produced in glycolysis.

Detailed explanation-4: -The process of aerobic respiration completely breaks down glucose into carbon dioxide and water, whereas anaerobic respiration incompletely breaks down glucose into alcohol (alcohol fermentation) or lactic acid (lactic acid fermentation).

Detailed explanation-5: -Anaerobic respiration is a type of respiration where oxygen is not used; instead, organic or inorganic molecules are used as final electron acceptors.