Question

Which of the following statements are correct?
(A) Some types of lipids play critical roles as cofactors or signals.
(B) Prostaglandins are derived from arachidonate.
(C) Steroid hormones are derived from sterols.
(D) Vitamins D, A, and E are fat-soluble.
Choose the correct answer from the options given below:

• A. (A), (B) and (D) only
• B. (A), (B) and (C) only
• C. (A), (B), (C) and (D)
• D. (B), (C) and (D) only

Hint:

Fat-soluble vitamins (D, A, E, K) and steroid hormones share lipid-related origins.

Answer 1

The Correct Option is C

- (A) Correct: Lipids such as phosphatidylinositol derivatives act as cofactors or signaling molecules.
- (B) Correct: Prostaglandins are synthesized from arachidonic acid, a polyunsaturated fatty acid.
- (C) Correct: Steroid hormones like cortisol and testosterone are derived from cholesterol (asterol).
- (D) Correct: Vitamins D, A, E, and K are fat-soluble and stored in body fat.