Question

which of the following statements best describes the structure and function of a carbohydrate?
carbohydrates are large molecules made up of monosaccharides and are used by organisms for energy storage.
carbohydrates are made up of starchy monomers and are used for structure, protection, and reproduction.
carbohydrates are long, winding molecules made up of amino acids and are important in the synthesis of fats and hormones.
carbohydrates are made up of sucrose molecules that are important for transportation and protein synthesis.
question 2 (3 points)
(01.02 mc)
carbohydrates and fats both
can be used as an energy source by organisms
can be bonded together to construct dna molecules
are made up of the glucose monomer
are monomers that can be made into large polymer chains

Explanation:

• For the first question:
• Carbohydrates are polymers made of monosaccharide (simple sugar) monomers. Their main function is energy storage (e.g., starch in plants, glycogen in animals).
• Option b is wrong because “starchy monomers” is an incorrect description (monosaccharides are the monomers). Also, reproduction is not a function of carbohydrates.
• Option c is wrong because amino - acids are the monomers of proteins, not carbohydrates.
• Option d is wrong because sucrose is a disaccharide (not the monomer of carbohydrates in a general sense), and protein synthesis is not a function of carbohydrates.
• For the second question:
• Both carbohydrates and fats can be used as energy sources. Carbohydrates are broken down quickly (e.g., glucose in cellular respiration), and fats are used for long - term energy storage and can also be metabolized for energy.
• Option b is wrong because DNA is made of nucleotides (not carbohydrates or fats).
• Option c is wrong because fats are not made of glucose monomers.
• Option d is wrong because fats are not monomers of large polymer chains in the same sense as carbohydrates (carbohydrates can form polymers like starch, but fats are esters of fatty acids and glycerol).

Answer:

1. a
2. a