Answer:
The correct answer is option in NADH and FADH₂.
Explanation:
Cellular respiration process is organized into four stages: glycolysis, oxidative carboxylation, Krebs cycle and electron transport chain. These stages produce energy by saving in the bonds of ATP molecules and reducing equivalents called NADH and FADH₂.
Glycolysis produces 2 ATP from substrate-level phosphorylation and 2 NADH. Oxidative carboxylation or link reaction produces 2 NADH and Citric acid cycle produces 2 ATP and 6 NADH AND 2 FADH₂.
These stages produce energy by saving energy in the bonds of ATP molecules and NADH and FADH₂ as each NADH during electron transport chain produces 3 ATP and each FADH₂ produces 2 ATP.
Thus, in NADH and FADH₂ is the correct option.