Question

Which of the following is not true?

(a) Steroids are built around a four-ringed hydrocarbon skeleton

(b) Cholesterol, testosterone, progesterone are examples of steroids

(c) Steroids are found in the cell membranes of both plant and animal

(d) Cannot be determined

I have been asked this question in quiz.

My question is from Biological Molecules Structures and Functions topic in division Structures and Functions of Biological Molecules of Cell Biology

Answer 1

Correct option is (c) Steroids are found in the cell membranes of both plant and animal

Easiest explanation: Cholesterol is a steroid which is found in the cell membranes of animals. Cholesterol is largely absent from plant cells, which is why vegetable oils are considered “cholesterol-free”.