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Ap bio cell respiration1 ppt

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Cellular Respiration Harvesting Chemical Energy ATP What?s the point? The point is to make ATP! ATP Harvesting stored energy Energy is stored in organic molecules carbohydrates, fats, proteins Heterotrophs eat these organic molecules ? food digest organic molecules to get? raw materials for synthesis fuels for energy controlled release of energy ?burning? fuels in a series of step-by-step enzyme-controlled reactions Harvesting stored energy Glucose is the model catabolism of glucose to produce ATP C6H12O6 6O2 ATP 6H2O 6CO2 ? + + + CO2 + H2O + heat fuel (carbohydrates) COMBUSTION = making a lot of heat energy by burning fuels in one step RESPIRATION = making ATP (& some heat) by burning fuels in many small steps CO2 + H2O + ATP (+ heat) ATP glucose

Chapter 7: Vitamins

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Chapter 7 Vitamins The Nature of Vitamins A. Definition - Vitamins are organic substances needed by the body in small amounts for normal metabolism, growth and maintenance - Coenzymes are substances that activate enzymes - do not provide energy B. Classification - major distinguishing characteristic of vitamins are their solubility in either fat or water - measured in micrograms C. Fat Soluble Vitamins - are absorbed from the intestine in the same way as fats, and like fats they can be stored in the same way - A, D, E, K - toxicity from vitamin A and D can be fatal D. Water Soluble Vitamins - B vitamins and C ? less stable to environmental influences; only B12 stored for any length of time Vitamin A A. Forms - necessary for vision
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