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9 Cards in this Set
- Front
- Back
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major purpose of metabolism
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oxidation of food to provide energy in the form of ATP
food molecules are converted to new cellular material processing of waste products to facilitate secretion generation of heat |
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protein
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polymers of amino acids (polypetides)
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carbohydrates
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sugars and their derivatives
most carbohydrates occur as dissaccharides (sucrose and lactose) or polysaccarides (starch) |
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fat
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triacylglycerides (TGA)
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postprandial
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dietary component high in blood
glucose is taken up by the liver (also muscle and fat) to replenish glycogen stores excess glucose taken up by liver and converted to TAG amino acids taken up by all tissues and used for protein synthesis excess aa converted to fat or glycogen |
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insulin
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main signal to store
released from pancreas in response to high glucose glucagon is low (reciprocal control) |
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stage 1 glycolysis
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splitting 6C glucose into 2X3 C pyruvate and NADH
cytoplasmic does NOT involve oxygen aerobic glycolysis NADH produced is reoxidised to NAD+ via mitochondria |
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anaerobic glycolysis
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NAD+ acts catalytically and is in small quantaties
limiting factor or progression of glycolysis lactate dehydrogenase THE OBJECT OF ANAEROBIC GLYCOLYSIS IS TO REOXIDISE NADH SO GLYCOLYSIS CAN CONTINUE |
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stage 2 citric acid cycle
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site of citric avid cycle (matrix), 1 reaction in inner membrane
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