wha is glycolysis

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Glycolysis is The multistep chemical breakdown of a molecule of glucose into two molecules of pyruvic acid; the first stage of cellular respiration in all orgasnisms; occurs in the cytoplasmic fluid. It starts with breaking down glucose (1 molecule - 6 ) into pyruvate (2 molecule - 3), producing a small amount of ATP. It then goes into the citric acid cycle which occurs in the mitochondria. It completes the breakdown of glucose, producing CO₂ and a small amount of ATP. Also it supplies the next step with electrons. It then uses the energy released by electrons "falling" down the electron transport chain to pump H⁺ across a membrane, which harnesses the energy of the H⁺ gradient through chemiosmosis, producing a lot of ATP (Final Product).   * Glycolysis actually ends after pyruvic acid forms, before it enters the mitochondria. edit