試題詳解

61. Which description is NOT correct?
(A) Allosteric interactions in Aspartate transcarbamoylase (ATCase) are mediated by large changes in quaternary structure.
(B) Chymotrypsinogen is activated by specific cleavage of a single peptide bond.
(C) Blood clotting is accomplished by a single-step zymogen activation.
(D) Phosphorylation is a highly effective means of regulating the activities of target proteins.