Biochemistry Which of the following is considered the regulated step in steroid hormone synthesis in the zona fasciculata? A Cholesterol to pregnenolone B Coicosterone to aldosterone C 11-Deoxycoisol to coisol D Pregnenolone to progesterone 💡 Explanation Which of the following is considered the regulated step in steroid hormone synthesis in the zona fasciculata? ✓ Correct Answer: A. Cholesterol to pregnenolone