What serves as a precursor of testosterone?: (A) Aldosterone, (B) Estrone, (C) Methyltestosterone, (D) Pregnenolone
Answer is D. Cholestrol is first acted upon by desmolase and 6 carbon unit cleaved off,forming the 21 carbon steriod, pregnenolone It is common precursor for all steriod hormonesRef: DM Vasudevan, 7th edition, page no: 664, 665, 666