Cholesterol contains how many hydrocarbon rings?

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Multiple Choice

Cholesterol contains how many hydrocarbon rings?

Explanation:
A key idea is that steroids have a tetracyclic hydrocarbon framework. Cholesterol’s structure includes four fused rings: three six-membered rings and one five-membered ring. That four-ring system is a defining feature of cholesterol and other steroids, with additional groups like a hydroxyl and a hydrocarbon tail attached, but the number of hydrocarbon rings remains four. So four is the correct count.

A key idea is that steroids have a tetracyclic hydrocarbon framework. Cholesterol’s structure includes four fused rings: three six-membered rings and one five-membered ring. That four-ring system is a defining feature of cholesterol and other steroids, with additional groups like a hydroxyl and a hydrocarbon tail attached, but the number of hydrocarbon rings remains four. So four is the correct count.

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