Enzymes The cleavage specificity of trypsin and chymotrypsin depend in part on the absence of water in the active site presence of a low-barrier hydrogen bond in the active site or specificity pocket proximity of Ser 195 to the active site or specificity pocket size, shape, and charge of the active site or specificity pocket absence of water in the active site presence of a low-barrier hydrogen bond in the active site or specificity pocket proximity of Ser 195 to the active site or specificity pocket size, shape, and charge of the active site or specificity pocket ANSWER DOWNLOAD EXAMIANS APP
Enzymes In the enzyme-catalyzed reaction shown below, what will be the effect on substances A, B, C, and D of inactivating the enzyme labeled E2? A ---(E1)---> B ---(E2)---> C ---(E3)---> A and B will still be produced, but not C or D A will still be produced, but not B, C, or D A, B, and C will still be produced, but not D A, B, C, and D will all still be produced A and B will still be produced, but not C or D A will still be produced, but not B, C, or D A, B, and C will still be produced, but not D A, B, C, and D will all still be produced ANSWER DOWNLOAD EXAMIANS APP
Enzymes The role of Asp 102 and His 57 during trypsin catalysis is to function as a proton shuttle clamp the substrate into the active site neutralize the charge on the other's side chain keep the specificity pocket open function as a proton shuttle clamp the substrate into the active site neutralize the charge on the other's side chain keep the specificity pocket open ANSWER DOWNLOAD EXAMIANS APP
Enzymes Enzyme-driven metabolic pathways can be made more efficient by concentrating enzymes within specific cellular compartments All of these fixing enzymes into membranes so that they are adjacent to each other grouping enzymes into free-floating, multienzyme complexes concentrating enzymes within specific cellular compartments All of these fixing enzymes into membranes so that they are adjacent to each other grouping enzymes into free-floating, multienzyme complexes ANSWER DOWNLOAD EXAMIANS APP
Enzymes The proteolysis rate enhancement by chymotrypsin (~1010 folds) corresponds to a reduction in activation energy of about 49 kJ/mol 40 kJ/mol 58 kJ/mol 88 kJ/mol 49 kJ/mol 40 kJ/mol 58 kJ/mol 88 kJ/mol ANSWER DOWNLOAD EXAMIANS APP
Enzymes How is the enzyme COX-1 important in human health? It catalyzes the production of hormones that maintain the stomach lining It helps to transport carbon dioxide in the blood It is a chemical derivative of aspirin It is critical for the biosynthesis of DNA It catalyzes the production of hormones that maintain the stomach lining It helps to transport carbon dioxide in the blood It is a chemical derivative of aspirin It is critical for the biosynthesis of DNA ANSWER DOWNLOAD EXAMIANS APP
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