Question: Which of these is NOT a lipid?

(a) RNA

(b) Wax

(c) Cholesterol

(d) Steroids

(e) Phospholipid

Answer: (a) RNA

RNA is a nucleic acid

Question: What do fatty acid tails lack?

Answer: Double bonds

Question: What are phospholipids composed of?

Answer: Phospholipids are composed of a phosphate group, a glycerol, and fatty acids

Question: Which of these is rich in unsaturated fats?

(a) Lard

(b) Beef fat

(c) Olive oil

(d) fat that is solid at room temperature

(e) Butter

Answer: (c) Olive oil

Olive oil is a plant oil, and most plant oils are rich in unsaturated fats.

Question: A function of cholesterol that does not harm health is its role _____.

(a) The most abundant male sex hormone

(b) As the primary female sex hormone

(c) In calcium and phosphate metabolism

(d) All of cholesterol’s effects cause the body harm.

(e) As a component of animal cell membranes

Answer: (e) As a component of animal cell membranes

Cholesterol is an important component of animal cell membranes.