In the first stage of cellular respiration (glycolysis), two molecules of pyruvate are produced. In the remaining stages of cellular respiration, a number of additional products are produced, such as . These other stages occur in the . View Available Hint(s) In the first stage of cellular respiration (glycolysis), two molecules of pyruvate are produced. In the remaining stages of cellular respiration, a number of additional products are produced, such as . These other stages occur in the . ATP ... mitochondria glucose ... mitochondria ATP ... cytoplasm water ... cytoplasm

Glycolysis is the first step of cellular respiration during which one glucose molecule is broken down into two molecules of pyruvate and 2 ATP and NADH are formed.

Kreb's cycle is the next stage of cellular respiration. Pyruvate enters the Kreb's cycle in the form of acetyl CoA and is completely oxidized into CO2 and H2O. The redox reactions of the Kreb's cycle produce NADH and FADH2. The process occurs in the matrix of mitochondria.

Oxidative phosphorylation is the last stage wherein NADH and FADH2 formed during glycolysis and Kreb's cycle are oxidized by giving their electrons to the terminal electron acceptor, molecular oxygen. Electron transfer occurs via electron carriers embedded in the inner mitochondrial membrane and the electrochemical gradient generated during electron transfer drives synthesis of a large number of ATP molecules.