Cellular Respiration Process: Glycolysis, Krebs Cycle & Electron Transport Chain #3349476 (License: Personal Use)

The image depicts the flow of energy metabolism in eukaryotic cells: glycolysis occurs in the cytoplasm and feeds pyruvate into the mitochondrial matrix for the Krebs cycle, which generates high-energy electron carriers (NADH and FADH₂). These carriers donate electrons to the inner mitochondrial membrane’s electron transport chain, driving proton pumping and ATP synthesis via chemiosmosis. Arrows indicate the directional movement of substrates, electrons, and energy output as ATP.

Used in biology education (high school or undergraduate) to teach aerobic respiration; supports lesson plans, study guides, and online science resources where visual reinforcement of metabolic pathways is needed.