Question

identify structural difference(s) between cholesterol and testosterone.

select all that apply:

cholesterol and testosterone have different groups connected to c - 3 of the a - ring.

cholesterol and testosterone have different groups connected to c - 17 of the d - ring.

Explanation:

• For the first option: In cholesterol, at C - 3 of the A - ring, there is an - OH group. In testosterone, at C - 3 of the A - ring, there is a carbonyl (\(C = O\)) group. So, they have different groups at C - 3 of the A - ring.
• For the second option: In cholesterol, at C - 17 of the D - ring, there is a long hydrocarbon chain. In testosterone, at C - 17 of the D - ring, there is an - OH group. So, they have different groups at C - 17 of the D - ring.

Answer:

• Cholesterol and testosterone have different groups connected to C−3 of the A - ring.
• Cholesterol and testosterone have different groups connected to C−17 of the D - ring.