Among the following properties, temperatures have the greatest effect on ______. A) ductility B) i
Among the following properties, temperatures have the greatest effect on ______.
A) ductility
B) impactstrength
C) hardness
D) strength
Among the following properties, temperatures have the greatest effect on ______.
A) ductility
B) impactstrength
C) hardness
D) strength
A.ground
B.house
C.centre
D.floor
A、emphasizes the role of import and export demand.
B、emphasizes stocks of assets.
C、both of the above.
D、neither of the above.
A、Reversible inhibition
B、Competitive inhibition
C、Noncompetitive inhibition
D、Uncompetitive inhibition
E、Irreversible inhibition
A、organophosphorous compound 有机磷化合物
B、organic mercury compound 有机汞化合物
C、organoarsenic compound 有机砷化合物
D、cyanide 氰化物
E、sulfonamides 磺胺类药物
A、Vmax decreases, Km decreases
B、Vmax increases, Km increases
C、Vmax remains unchange, Km increases
D、Vmax remains unchange, Km decreases
E、Vmax decreases, Km increases
A、All allosteric enzymes have a regulatory subunit and a catalytic subunit.
B、The kinetic characteristics of allosteric enzyme are S-shaped curve rather than rectangular hyperbola.
C、The mechanism of allosteric activation is the same as that of enzyme activator.
D、Sulfonamides (磺胺类药物) work by allosteric inhibition.
E、It is an important way to rapidly regulate the enzyme content.
A、Phosphorylation/Dephosphorylation
B、Adenylation/Deadenylation
C、Methylation/Demethylation
D、Acetylation/Deacetylation
E、-SH / -S-S-
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