This macromolecule's functions include insulation, waterproofing, and shock absorption.

This macromolecule's functions include insulation, waterproofing, and shock absorption.

• A. Fat
• B. Carbohydrate
• C. Protein
• D. Nucleic acid

Answer: (A)

Fats (lipids) provide insulation, waterproofing, and shock absorption. Subcutaneous adipose tissue formed by fats creates a warm insulating layer under the skin to reduce heat loss. Lipid components also contribute to waterproofing by forming barriers in the skin and in secretions that limit water passage. Fatty tissue around organs cushions them, giving mechanical protection against shocks. Carbohydrates mainly supply quick energy, proteins offer structural and catalytic roles, and nucleic acids store genetic information, none of which provide the same combination of insulation, waterproofing, and cushioning as fats.

Fats (lipids) provide insulation, waterproofing, and shock absorption. Subcutaneous adipose tissue formed by fats creates a warm insulating layer under the skin to reduce heat loss. Lipid components also contribute to waterproofing by forming barriers in the skin and in secretions that limit water passage. Fatty tissue around organs cushions them, giving mechanical protection against shocks. Carbohydrates mainly supply quick energy, proteins offer structural and catalytic roles, and nucleic acids store genetic information, none of which provide the same combination of insulation, waterproofing, and cushioning as fats.