Question

question 2 which of the following statements about macronutrients is true? a they cannot be used for energy. b they are needed in small amounts. c there are four classes: water, carbohydrates, lipids, and proteins. d they each contain carbon, hydrogen, oxygen, and nitrogen.

Explanation:

Macronutrients (carbohydrates, lipids, proteins) are needed in large amounts for energy and body functions. Water is not a macronutrient in the same energy - providing sense as carbs, lipids, proteins. Macronutrients (excluding water) contain C, H, O (proteins also have N).

Answer:

D. They each contain carbon, hydrogen, oxygen, and nitrogen.