nutrition exam 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| two types of amino acids | essential and non essential
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| essential amino acids | cannot be made by body
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| non essential amino acids | can be made by body
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| conditionally essential amino acid | cannot be made from dietary essential amino acid. ex: PKU
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| Eat protein to... | provide essential amino acids & provide enough protein to make non essential amino acids.
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| Gastrin | hormone that increases gastric acid secretion (HCL) - uncoils and breaks down protein
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| Pepsin | enzyme in the stomach activated by acidic environment
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| proteases | secreted by pancreas and intestine - digest amino acids.
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| peptidases | intestinal wall enzymes - digest smaller chains of amino acids
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| Absorption | amino acids are absorbed across the intestinal wall, released into portal vein
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| AA's in the liver are... | combined into protein, converted to glucose or fat, can be used for energy
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| 8 functions of proteins | building materials for growth/maintenance, enzymes, hormones, fluid balance, acid/base regulators, transporters, antibodies, energy source and glucose.
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| protein turnover/AA pool | constant turnover, constantly used while others are built, no protein storage in body.
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| nitrogen balance | amount of consumed nitrogen compared to nitrogen excreted (urine, feces, sweat).
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| + nitrogen balance | if amount consumed is more than amount excreted. Important during periods of growth (adolescence, pregnancy)
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| - nitrogen balance | happens in extreme trauma, malnutrition, fever, infection
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| complete protein | contain all essential AA in similar amounts needed by the body. (animal sources)
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| Limiting amino acid | AA in least supply of a food item
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| complementary proteins | combining AA so limiting AA are covered.
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| Reference protein | egg
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| Amino acid scoring | comparing to AA reference (egg)
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| biological value | measured nitrogen absorbed
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Created by:
twhittak
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