AP BIOLOGY

Detailed explanation-1: -The net energy output for one glucose molecule from glycolysis through the Krebs cycle is: 4 ATP, 10 NADH + H+, and 2 FADH2. In glycolysis, two ATP were invested, and four ATP and two NADH + H+ were produced. In the conversion of pyruvate to acetyl CoA, two NADH + H+ were produced.

Detailed explanation-2: -Glycolysis starts with one molecule of glucose and ends with two pyruvate (pyruvic acid) molecules, a total of four ATP molecules, and two molecules of NADH.

Detailed explanation-3: -Note that this process completely oxidizes 1 molecule of pyruvate, a 3 carbon organic acid, to 3 molecules of CO2. During this process, 4 molecules of NADH, 1 molecule of FADH2, and 1 molecule of GTP (or ATP) are produced.

Detailed explanation-4: -The process of glycolysis, conversion of pyruvate and citric acid cycle produces 4 ATP, 10 NADH, and 2 FADH2 per molecule of glucose.

Detailed explanation-5: -For each glucose at the beginning, end products are 2 pyruvates, 2 ATP, and 2 NADH. Between glycolysis and the citric acid cycle (Pyruvate oxidation): Pyruvates from glycolysis enter the inner compartment of the mitochondrion. One carbon atom is removed, and 2 NADH are generated.