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dudek chapter 3

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Question
Answer
protein   componenet of every living cell. plays a role in fluid balance, provides 4cal of energy  
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amino acids   building blocks of protein. used as components of enzuems, hormones, antibodies  
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essential amino acids   body cannot make these. they must abe consumed through food  
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nonessentinal amino acids   can be made by the body if nitrogen is available  
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absorption site of anmino acids   principal site is small intestine  
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protein digestion   begins in stomach, HCL breaks down protein  
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notrogen balanace   protein syntheisis is occuring at the same rate as protein breakdown. is determined by intake of nitrogen and output of nitrogen  
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anablolism   protein sysnthesis  
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catabolism   protein breakdown  
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positive nitrogen balance   when protein synthesis exceeds protein breakdown  
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negative nitorgen balance   undesirable state that occurs when protein breakdown exceeds protein syntheses  
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where protein if found   all food groups except for the fruit gorup  
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RDA for protein   10-20% of total calories. most americans consume more protein than they need  
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complete proteins   provide all essential amino acids. animal and soy protein are complete proteins  
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incomplete proteins   these proteins lack one or more essential amino acids. except for soy, all plants ares ources of incomplete proteins  
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complementary proteins   2 proteins that when combined, provide all essential amino acids  
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supplements for pure vegan pts   may need to have vitamin B12 and vitamin D supplements  
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american diet   provides 50% more protein than needed  
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