Learn / Metabolism
Metabolic pathways
Every FMK pathway as a clickable map. Pick one pathway to hammer it — next step, enzyme, regulator, cofactor, and the facts that get tested (NADPH and who needs it, rate-limiting steps, deficiencies) — or set it to all pathways for a mixed drill. Every answer says which enzyme and which pathway.
Glycolysis · Cytosol (all cells). Enzymes sit beside the arrows; a ★ marks the rate-limiting step. The map scrolls inside its panel.
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Glycolysis
Lactate
Made from Pyruvate by Lactate dehydrogenase
Lactate dehydrogenase — Glycolysis
Cofactors: NADH → NAD⁺
Anaerobic fate: regenerates NAD⁺ so GAPDH can keep running. Hypoxia, ETC poisons, or PDH failure all push pyruvate here → lactic acidosis.
Condition cards:Warburg effect (cancer aerobic glycolysis) →