alleryStart learning →Cholesterol is named as the precursor of which set of molecules?
ATestosterone, glycogen and the bile salts of the gut
BEstradiol, Vitamin D and the digestive enzyme pepsin
CTestosterone, estradiol, Vitamin D and bile salts
DTestosterone, estradiol and the four main types of RNA
Answer & Solution
Correct answer: C. Testosterone, estradiol, Vitamin D and bile salts
1. Cholesterol is the most common steroid and is synthesised mainly in the liver.
2. It is the precursor of steroid hormones such as testosterone and estradiol, secreted by the gonads and endocrine glands.
3. It is also the precursor to Vitamin D.
4. It is the precursor of bile salts, which emulsify fats so cells can absorb them.
5. Glycogen is a carbohydrate, pepsin is a protein enzyme and RNA is a nucleic acid, so none of them can be built from a steroid.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 3 "Biological Macromolecules", section 3.3 Lipids_
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