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How can you overcome activation energy? 2 ways |
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Definition
large amounts of heat, enzymes |
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When does the enzyme become denatured? |
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when temperature increases |
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enzymes exhibit a peak activity within a narrow pH range |
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If salt concentration is close to zero, how does the amino acid react? |
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Definition
chains will attract one another: the enzyme will denature and form an inactive precipitate |
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If the salt concentration is too hihg, |
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Definition
normal interaction of charged groups will be blocked: enzyme will denature and form an inactive precipitate |
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Inorganic ions may alto interact with the active site |
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Definition
by disrupting the H binding and binding to the surround ionic residues |
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digestive enzymes, acid, and mucus |
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hormones to regulate digestion |
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Definition
transport of nutrients into blood or lymph |
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Digestive tracts functions |
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Definition
storage and elimination, and immune barrier |
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What digests starch in the small intestine? |
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secrete mucous, and protect against digestion of epithelium |
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an inactive form of pepsin that is activated by pepsin and HCl |
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an inactive enzyme precursor |
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Parietal cells secrete what |
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what is used to absorb B12 in the small intestine? |
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What breaks down large polypeptides? |
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Definition
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What breaks down small polypeptides and small peptides? |
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Where is breakdown of protein |
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Definition
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What is digested in the small intestine? |
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Definition
large polypeptide, small polypeptides |
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Where are amino acids absorbed/how |
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Definition
in the stomach: they are absorbed by cotransport with NA ions |
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What are absorbed via cotransport with H+ and hydrolyzed to amino acids within the cells? |
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Definition
dipeptides and tripeptides |
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How do amino acids leave the cell? |
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Definition
by facilitated diffusion, they then enter the capillary blood in the villi and are transported to the liver via the hepatic portal vein |
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Where does lipid digestion begin? |
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Definition
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Where are lipids completely digested and how? |
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Definition
the small intestine and by pancreatic lipase |
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Where do you find villi and microvilli? |
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Definition
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What is absorbed in the large intestine? |
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Definition
Water, electrolytes, vitamin K, and some B vitamins |
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What are necessary for synthesis of various essential nutrients? |
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Definition
microflora: K, B, and Folic Acid |
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Does digestion occur in the large intestine? |
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Definition
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What enzymes are in the small intestine? |
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Definition
trypsin, chymotrypsin, carboxypeptidase, pancreatic lipase, maltase, sucrase, lactase, aminopeptides |
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