Which of the following are steroid-based molecules?
A) I only
B) I, II, and III
C) I and III
D) I, III, and IV
Common steroid-based molecules commonly seen on the MCAT include testosterone, progesterone, estrogen, cortisol, and aldosterone.
A) I only, incorrect.
B) I, II, and III, incorrect, Triglycerides consist of three fatty acids bound by ester linkages to a glycerol backbone.
C) I and III, correct.
D) I, III, and IV, incorrect, DNA is not a steroid-based molecule; DNA consists of deoxyribose, a phosphodiester linkage, and a nitrogenous base.