AP BIOLOGY

Detailed explanation-1: -The first phase of cellular respiration, glycolysis, uses glucose as a reactant.

Detailed explanation-2: -Oxygen and glucose are both reactants of cellular respiration. When one molecule of glucose is broken down, it can be converted to a net total of 36 or 38 molecules of ATP. This only occurs in the presence of oxygen.

Detailed explanation-3: -Glucose is the starting reactant for A Glycolysis. Glycolysis represents the first stage of aerobic respiration and also is a key player in anaerobic respiration as well. During this reaction glucose is split into two molecules of pyruvic acid through 10 enzyme catalyzed reactions.

Detailed explanation-4: -Glucose is used in the very first step of cellular respiration, as it represents the main substrate metabolized during glycolysis. After glucose is broken down into pyruvate, the pyruvate molecules are transformed into acetyl CoA.

Detailed explanation-5: -Glycolysis takes place in the cytosol, the citric acid cycle occurs in the mitochondrial matrix, and oxidative phosphorylation occurs on the inner mitochondrial membrane. The starting reactants of cellular respiration include glucose, ATP, and NAD+; and the final products include ATP and H2O.