Question Detail
Question
How many fused hydrocarbon rings does the steroid nucleus consist of?
Correct Answer
Option C is the correct answer.
Detailed Explanation
The steroid nucleus (cyclopentanoperhydrophenanthrene) consists of four fused hydrocarbon rings: three cyclohexane rings (A, B, C) and one cyclopentane ring (D). This is the core structure from which all steroid hormones (e.g., cholesterol, estrogen, testosterone) are derived.
Hint
Count the number of rings that make up the core steroid structure.