AP BIOLOGY

Detailed explanation-1: -Glycolysis is the metabolic pathway that converts glucose into pyruvate. During glycolysis process, 2 ATP molecules and 2 NADH molecules are produced. FADH is not produced during glycolysis. Thus, option D is correct and other options are incorrect.

Detailed explanation-2: -Not Input or Output: Pyruvate, Glucose, Acetyl CoA, Coenzyme A and CO₂. Each of the four stages of cellular respiration occurs in a specific location inside or outside the mitochondria.

Detailed explanation-3: -The input involved in glycolysis is two ATP (Adenosine triphosphate), two NAD+ and one glucose. The output involved in glycolysis is four ATP, two NADH (nicotinamide adenine dinucleotide hydrogen) and two pyruvate molecules.

Detailed explanation-4: -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.