Which is a difference between proteins and carbohydrates and fats?

a) proteins are macromolecules; carbohydrates and fats are not.

b) proteins are composed of monomers; carbohydrates and fats are not

c) carbohydrates and fats contain carbon, hydrogen, and oxygen; proteins do not

d) excess carbohydrates and fats are stored; excess proteins are not

Excess carbohydrates and fats are stored but proteins are not. The correct answer is option (D).

Further Explanation:

The biomolecules are the large macromolecules that play an important role in cellular processes like cell growth, division, development, and regulation. Proteins, lipids (fats), carbohydrates and nucleic acids are the major classes of biomolecules. The monomeric units of carbohydrates, lipids, proteins, and nucleic acids are monosaccharides, fatty acids, amino acids, and nucleotides, respectively.

The genetic code in an organism is stored in the nucleic acid and is passed from one generation to next. Carbohydrates provide energy to the body of an organism and have structural roles also. Lipids act as an energy storage molecule and serve as chemical messengers. Proteins help in muscle and tissue building. They function as enzymes and hormones.

Excess carbohydrates, as well as fats, are stored in the body and serve as energy fuel when required. Excess proteins, on the other hand, are usually excreted from the body but some of it is stored as fats and it is always associated with health problems.

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Answer Details:

Grade: High School

Subject: Biology

Chapter: Biomolecules

Keywords:

Biomolecules, macromolecules, proteins, fats, lipids, carbohydrates, hormones, enzymes, nucleic acid, monomer, monosaccharide, nucleotides, fatty acids, amino acids, genetic code.