Chapter 6 Note

Chapter 6 Note - Chapter 6. Metabolism -How do we get food?...

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-How do we get food? Glucose- C-CCoA, Acetyl-CoA- Citric acid cycle- Electron Transport chain *Metabolism- produce CO2, H2O, and water Glucose, Amino acids, Fatty acids- used as fuel: CATABOLISM --ATP- used for contraction of muscles *Breakdown of Glucose -2 Pyruvate molecules *Glucogenogenesis- how body makes glucose -pyurave, amino acids broken down—not fatty acids *Fat Breakdown -Chylomicron VLDL (transport fat into cells, cholesterol Fatty acids—C-C-coA Acetyl-CoA- Carbohydrate unavailable---ketones---(used for energy excreted in urine accumulate in blood) -C-C-C-C- Oxalate *Amino acids- Nh3 to make glucose -blood glucose; *Regulating Metabolism Hormones- insulin, glucagon -high insulin levels promote synthesisof glycogen, proteinmad n fat -promote gulcogeneogensis, lipid & protein breakdown. *Glucose Metabolism -During digestion, complex carbohydrates are hydrolyzed or broken down into monosaccharides. -Glucose= primary energy source =absorbed by all cells and used to generate energy—through cellular respiration -Cellular respiration uses O2 to convert glucose to energy in the form of ATP 1. Glycolysis -first anaerobic (not required oxygen); second aerobic (use oxygen; the products are ATP, CO 2 , and H 2 O) -2 ATP produced 1. Split glucose into 2 pyruvates, producing high-energy electrons and a small amount of ATP 2. Each pyruvate is then broken down to produce more ATP or used to make glucose -Constant level of glucose in the bloodstream is so important that the body ues several metabolic pathways. A. Glucogenesis
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Chapter 6 Note - Chapter 6. Metabolism -How do we get food?...

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