<prompt> Which enzyme converts androgen to estrogen?-Cholesterol DesmolaseAromatase11 b hydroxylase21 b hydroxylase  <response>: Ans. is b i.e., Aromatase Aromatase is an enzyme located in the endoplasmic reticulum of gonads, adipose tissue and placenta It helps in the conversion of androgen into estrogen. It converts androstenedione to estrone and testosterone to estradiol This conversion is done by three successive hydroxylation and by removal of methyl group as formate and by aromatization of the A ring 