Enzymes How is the enzyme COX-1 important in human health? It catalyzes the production of hormones that maintain the stomach lining It is a chemical derivative of aspirin It helps to transport carbon dioxide in the blood It is critical for the biosynthesis of DNA It catalyzes the production of hormones that maintain the stomach lining It is a chemical derivative of aspirin It helps to transport carbon dioxide in the blood It is critical for the biosynthesis of DNA ANSWER DOWNLOAD EXAMIANS APP
Enzymes The cleavage specificity of trypsin and chymotrypsin depend in part on the proximity of Ser 195 to 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 size, shape, and charge of the active site or specificity pocket proximity of Ser 195 to 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 size, shape, and charge of the active site or specificity pocket ANSWER DOWNLOAD EXAMIANS APP
Enzymes Common feature in all serine proteases is a single reactive serine residue hydrophobic specificity pocket cluster of reactive serine residues hydrophilic specificity pocket single reactive serine residue hydrophobic specificity pocket cluster of reactive serine residues hydrophilic specificity pocket ANSWER DOWNLOAD EXAMIANS APP
Enzymes The nucleophile in serine proteases is water Asparagine Serine both (a) and (b) water Asparagine Serine both (a) and (b) 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 will still be produced, but not B, C, or D A, B, and C will still be produced, but not D A and B will still be produced, but not C or D A, B, C, and D will all still be produced A will still be produced, but not B, C, or D A, B, and C will still be produced, but not D A and B will still be produced, but not C or D A, B, C, and D will all still be produced ANSWER DOWNLOAD EXAMIANS APP
Enzymes Which of the following is false statement with regard to comparison between Serine and HIV proteases? Both show specificity for certain amino acid sequences Both forms an acyl-enzyme intermediate Both use nucleophilic attack to hydrolyze the peptide bond Both require water to complete the catalytic cycle Both show specificity for certain amino acid sequences Both forms an acyl-enzyme intermediate Both use nucleophilic attack to hydrolyze the peptide bond Both require water to complete the catalytic cycle ANSWER DOWNLOAD EXAMIANS APP
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