ENS 304 Lecture Notes - Lecture 13: Citric Acid Cycle, Phosphagen, Fructose
6 Apr 2020
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Ens 304 - energy pathways (for carbs only) The anaerobic pathway can then be further split into. After ingestion, digestion, and absorption, carbs enter the blood into the liver. 40-50% of glucose and fructose are converted to glucose. Priority #2: replenish depleted glycogen in cells. Glucose is converted to tg"s, can happen directly within muscle and fat cells. Some fructose is converted to tg"s in the liver. This results in elevated tg"s in the blood/liver (non-alcoholic fatty liver. Glycolysis: anaerobic, rapid, but yields small amounts of atp (2-3) End product: 2 pyruvate, 2 atp (glucose), 3 atp (glycogen) Krebs cycle and etc (electron transport chain): aerobic, slower, but yields a total of 36-39 atps per molecule. Carbs (glucose + glycogen) are stored within the muscle, liver, and blood. Glycogen: storage molecule of glucose in animals (no fructose) Large molecules with pinwheel orientation centered around protein core (glycogenin)
