BIOL 1000 Chapter Notes - Chapter 6: Oxidative Phosphorylation, Cellular Respiration, Energy Carrier

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Collection of metabolic reactions within cells that break down food molecules to produce. Glucose and gasoline = good food molecules cuzz abundance of easily accessible electron from c h bonds (equally distant from atomic nuclei = easily removable = do work) Oxidation leo: oxygen is the atom that accepts the electrons usually. Cellular respiration is like controlled combustion the energy of the c h bonds is not liberated suddenly, producing heat rather slowly released with energy being transferred to other molecules. Dehydrogenase enzyme that facilitate the transfer of electrons from food to a molecule that acts as energy carrier (nicotinamide adenine dinucleotide nad nadh) Three phases: glycolysis enzymes breakdown glucose into 2 pyruvate molecules. Most fundamental: glycolysis is universal (bacteria, archaea, eukaryotic), doesn"t depend on o2, glycolysis occurs in all cells in cytosol using soluble enzymes: pyruvate oxidation and the citric acid cycle. Pyruvate oxidation occurs in mitochondria oxidized i acetyl-group and 1.

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