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2.3.2 digestion of protein-r - See Figs 3.20 3.21& 4.14...

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2.3.2. Digestion,  Absorption and  Circulation of Protein
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Fig 4.6   Gastrin (hormone)  gastric juices  Gastric juices contain HCl  HCl causes unfolding of proteins  HCl activates pepsin (enzyme) In the Stomach
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  bicarbonate   from pancreas secretin  Fig 6.10 CCK   enzymes  from  pancreas In the Duodenum
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Digestion of Proteins Peptides are cleaved into  smaller units and amino  acids by   protease enzymes enzyme peptide amino  acid
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Absorption of amino acids
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Unformatted text preview: See Figs 3.20, 3.21 & 4.14 Problems with protein digestion • celiac disease – need gluten free diet • cystic fibrosis – need supplemental digestive proteins Fate of Dietary Protein Fig 6.9 Nitrogen Excretion Fig 6.10 Nitrogen Balance = grams N in minus grams N out • nitrogen equilibrium • positive nitrogen balance • negative nitrogen balance...
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