CAS BI 315 Chapter Notes - Chapter 15.1-15.4: Serous Membrane, Maltose, Lacteal
31 Jan 2018
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Carbohydrate catabolism : breakdown of glucose to pyruvate/lactate. 686 kcal/mol for glucose breakdown; 40% goes to atp. Glycogen reserve supply of glucose; stored in skeletal muscles + liver; glucose + p i. Gluconeogenesis synthesis of glucose from noncarbohydrate precursors. Processes share many enzymes [] of glucose/pyruvate hormones enzyme direction. Fat ~ 80% of stored energy; stored in adipocytes (cells filled w fat droplet) adipose. Adipocytes synthesize & store triglycerides during uptake release when no food tissue absorption. Fatty acids are broken down by linking coenzyme a to carboxyl end of fatty acid. Beta oxidation splits coenzyme a from end of fatty acid 2 pairs of h+ fad and nah . When one molecule broken off fatty acid coenzyme immediately added again . Fatty acids are catabolized in mitochondria but synthesized in cytosol. Acetyl coenzyme a transfers 2 carbons to another acetyl coa fatty acid chain built 2 c at a time.
