[生物] 關於這一題?
Which of the following characteristics is not associated with allosteric
regulation of an enzyme's activity?
A) A molecule mimics the substrate and competes for the active site.
B) A naturally occurring molecule stabilizes a catalytically active
conformation.
C) Regulatory molecules bind to a site remote from the active site.
D) Inhibitor and activator molecules may compete with one another.
E) The enzyme usually has a quaternary structure.
這題答案為什麼是A
The symptoms of a certain inherited disorder in humans include respiratory
problems and, in males, sterility.
Which of the following is a reasonable
hypothesis for the molecular basis of this disorder?
A) a defective enzyme in the mitochondria.
B) defective actin molecules in cellular microfilaments
C) defective dynein molecules in cilia and flagella
D) abnormal hydrolytic enzymes in the lysosomes
E) a defective secretory protein
答案是C 只是裡面有cilia ,flagella 看起來就是怪怪的
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