1.) Protein kinases are involved in
A) the digestion of drugs to potentially toxic byproducts.
B) the degradation of enzymes to the component amino acids.
C) the phosphorylation of a wide variety of proteins.
D) the metabolism of drugs to water soluble compounds.
E) the cleavage of peptide bonds.
2.) Which of the following is triggered by the binding of
glucose-6-phosphate to glycogen phosphorylase?
A) The protein changes from its T form to its R form.
B) The protein changes from its R form to its T form.
C) The protein becomes dephosphorylated.
D) It catalyzes the addition of a phosphate group to AMP.
E) It catalyzes the addition of a phosphate group to Ser-14.
3.) Which of the following amino acid residues are often
involved in acid-base in enzyme-catalyzed reactions?
A) Histidine, aspartate, serine, and cysteine
B) Serine, tyrosine, arginine, and cysteine
C) Glutamine, asparagine, lysine, and tyrosine
D) Histidine, aspartate, lysine, and serine
E) Histidine, aspartate, glutamate, arginine, and lysine