25 下列那一種類固醇(steroid)的結構是由19個碳組成?
助孕素(progesterone) 睪固酮(testosterone)
雌二醇(estradiol) 皮質醇(cortisol)
ans testosterone:
review the graph!
http://en.wikipedia.org/wiki/File:Steroidogenesis.svg
progestagens/ glucocorticoid= 21 c
androgen 19 c: sweet 18 plus one dick = 19
estrogen 18 c: female: sweet 18
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