Cell bio class #10

Cell bio class #10 - Cell bio class#10 notes Metabolism...

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Cell bio class #10 notes Metabolism: - addition of enzyme lowers activation energy, but it doesn’t change delta G (graph is exergonic) - second graph is endergonic (get energy from ATP) Photosynthesis and Respiration: - Anabolism photosynthesis - catabolism respiration (break organic molecules) - loss of energy is released as heat - ATP not actually a high energy molecule (bond energy from phosphates able to be transferred) ATP: - donating the last phosphate group: phosphorylation - phosphorylated molecules: high energy state, carries a different charge - ATP reacts with water to give ADP and phosphate, is exergonic (so spontaneous in the presence of various hydrolases, will proceed and release free energy) - Glucose and phosphate results in glucose-6-phosphate (exergonic, so won’t go on it’s own, need to put in 3.3 kcal/mol) - Glucose is a hexo sugar - ATP and glucose results in glucose-6-phosphate and ADP, so still negative net value, (-4 kcal/mol) so reaction will proceed The ATP Cycle: -
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