生物化学答案2023

第三章测试

1.About competitive inhibitors, which one is true?（ ）.
A:K_m decreases, V_max remains constant B:K_m remains constant, V_max decreases C:K_m decreases, V_max decreases D:K_m increases, V_max remains constant
答案:D
2.Inhibition of phosphate pesticide on choline esterase belongs to（ ）.
A:Noncompetitive inhibition Competitive inhibition B:Irreversible inhibition C:Reversible inhibition Irreversible inhibition D:Competitive inhibition Reversible inhibition 3.Isoenzyme is a group of enzymes that catalyze the same chemical reaction, and the molecular structure, physicochemical properties and immunological properties of the enzyme protein are different（ ）.
A:错 B:对 4.The specificities of enzymes can be briefly divided into three，___, ___, ___ and ___.
5.Briefly state the significance of K_m.