Question

Steroids have ___________

(a) Sterol nucleus with two alkyl chain attached to the ring D of cholesterol

(b) Sterol nucleus with two CH3 between C and D ring and A and B ring of cholesterol

(c) Sterol nucleus without CH3 between C ring and D ring of cholesterol

(d) Sterol nucleus but lack the alkyl chain attached to the ring D of cholesterol

I got this question by my college professor while I was bunking the class.

Question is taken from Biosynthesis of Cholesterol, Steroids and Isoprenoids in section Lipid Biosynthesis, Biosynthesis of Amino Acids, Nucleotides and Related Molecules of Biochemistry

Answer 1

Correct choice is (d) Sterol nucleus but lack the alkyl chain attached to the ring D of cholesterol

The explanation is: Steroids have a sterol nucleus but lack the alkyl chain attached to the ring D of cholesterol.