AP BIOLOGY

Detailed explanation-1: -In addition, the respiratory cycle converts NADH and FADH2 into reactants that the Krebs cycle requires to function. Thus, if oxygen is not present, the respiratory cycle cannot function, which shuts down the Krebs cycle. For this reason, the Krebs cycle is considered an aerobic pathway for energy production.

Detailed explanation-2: -The tricarboxylic acid (TCA) cycle, also known as the Krebs or citric acid cycle, is the main source of energy for cells and an important part of aerobic respiration.

Detailed explanation-3: -Glycolysis – It is an anaerobic process, which occurs in the cytoplasm of the cell. In glycolysis, partial oxidation of glucose occurs, which yields two molecules of pyruvic acid. Krebs Cycle – It is an aerobic process that takes place in the mitochondria of the cell.

Detailed explanation-4: -What is the Krebs Cycle? Also known as the citric acid cycle, the Krebs cycle or TCA cycle is a chain of reactions occurring in the mitochondria, through which almost all living cells produce energy in aerobic respiration. It uses oxygen and gives out water and carbon dioxide as products.

Detailed explanation-5: -The Krebs Cycle, also called the citric acid cycle, is the second major step in oxidative phosphorylation. After glycolysis breaks glucose into smaller 3-carbon molecules, the Krebs cycle transfers the energy from these molecules to electron carriers, which will be used in the electron transport chain to produce ATP.