Energy for the body Trapped in chemical bonds of fats, proteins, and carbs (potential) liberate energy –break bonds –release energy, CO 2 and H 2 0 –Energy is transferred to ATP for use in the body

Glycolysis Splitting sugar (glucose) Used by all organisms Occurs in cytoplasm Phosphorylation –Adding a phosphate to a substance NAD + –Electron acceptor (carrier) Used in electron transport chain for energy –nicotinamide adenine dinucleotide

Glycolysis Animation Smith College

Glycolysis Where? When? Why? Catabolic Anabolic What happens to pyruvate

Pyruvate Aerobic - presence of oxygen –enters the Krebs cycle (mitochondrion) tricarboxylic acid (TCA) cycle Anaerobic - no oxygen –fermentation pathway –pyruvate forms lactic acid –Lactic acid is transported to liver to be converted