Answer:
Among all the options 4 options are wrong.
Wrong options:
a. The action of squalene monooxygenase oxidizes C14 of the squalene chain, forming an epoxide
b. Squalene is joined at carbons 1 and 30 to form the fused ring structure of sterols
c. All of the sterols have three fused rings (the steroid nucleus) and are alcohols with a hydroxyl group at carbon C3
d. I Squalene monooxygenase uses reduced flavin nucleotides, such as FAD (2H), as the cosubstrate in the reaction
Correct Option:
e. Squalene monooxygenase is considered a mixed function oxidase because it catalyzes a reaction in which only one of the oxygen atoms of O2 is incorporated into the organic substrate
Reference Book:
Marks' Basic Medical Biochemistry
Chapter 34
Cholesterol Absorption, Synthesis, Metabolism, and Fate