LIFE SCIENCE

Detailed explanation-1: -Answer and Explanation: Carbohydrates, proteins and fats are all composed of carbon and hydrogen. In fact, they fall in the category of organic chemistry. All three of them are polymers that are formed when their monomers link together via dehydration synthesis.

Detailed explanation-2: -Fats are the slowest source of energy but the most energy-efficient form of food. Each gram of fat supplies the body with about 9 calories, more than twice that supplied by proteins or carbohydrates. Because fats are such an efficient form of energy, the body stores any excess energy as fat.

Detailed explanation-3: -The best explanation for why carbohydrates and proteins are classified as polymers is because they are made up of many similar small units, monomers.

Detailed explanation-4: -Carbohydrates, lipids, proteins, and nucleic acids are organic molecules found in every living organism. These macromolecules are large carbon based structures. The macromolecules are assembled by joining several smaller units, called monomers, together through a chemical reaction called dehydration synthesis.