Question

question: 11
which statement best compares lipids and carbohydrates?
a. carbohydrates are composed of water and ammonia, and lipids are composed of trisaccharides.

b. carbohydrates are composed of monomers, and lipids are composed of polymers.

c. carbohydrates are composed of nucleotides, and lipids are composed of sugars.

d. carbohydrates are composed of monosaccharides, and lipids are composed of glycerol and fatty acids.

Explanation:

• Option A is incorrect: Carbohydrates are made of carbon, hydrogen, oxygen (not water/ammonia), and lipids are not trisaccharides.
• Option B is incorrect: Carbohydrates form polymers from monomers, but lipids are not polymers.
• Option C is incorrect: Nucleotides make nucleic acids, not carbohydrates; lipids are not made of sugars.
• Option D is correct: Carbohydrates have monosaccharide monomers, and most lipids (like triglycerides) consist of glycerol and fatty acids.

Answer:

D. Carbohydrates are composed of monosaccharides, and lipids are composed of glycerol and fatty acids.