Question 1

Which of the following is NOT a macronutrient?

Accepted Answer

Water

Question 2

Which macronutrient is the main source of cellular energy in the human body?

Accepted Answer

Carbohydrates

Question 3

Proteins are composed of which elements?

Accepted Answer

C, H, O, N

Question 4

Which of the following statements about lipids is correct?

Accepted Answer

Lipids are composed of carbon, hydrogen, and oxygen.

Question 5

A patient is following a diet high in grains, fruits, and vegetables. Which macronutrient is most abundant in this diet?

Accepted Answer

Carbohydrates

Question 6

Which macronutrient is primarily used for building and repairing tissues?

Accepted Answer

Proteins

Question 7

Which of the following is a correct formula for calculating the energy provided by carbohydrates, given that 1 gram of carbohydrate provides 4 kcal?

Accepted Answer

$Energy = grams 	imes 4$

Question 8

Which macronutrient is NOT a significant source of energy under normal conditions?

Accepted Answer

Proteins

Question 9

Which of the following foods is a major source of lipids?

Accepted Answer

Butter

Question 10

A person consumes 50 grams of protein in a day. How much energy does this provide? (1 gram of protein = 4 kcal)

Accepted Answer

$50 	imes 4 = 200$ kcal

Question 11

Which statement best describes the digestion of carbohydrates?

Accepted Answer

Carbohydrates are broken down into simple sugars before being absorbed.

Question 12

Which macronutrient contains nitrogen in its structure?

Accepted Answer

Proteins

Question 13

Which of the following is a function of lipids in the body?

Accepted Answer

Long-term energy storage

Question 14

Which macronutrient is found in foods such as meat, eggs, and dairy products?

Accepted Answer

Proteins

Question 15

Which of the following statements is TRUE regarding macronutrients?

Accepted Answer

All macronutrients can be used as energy sources in the body.

Question 16

Which macronutrient is primarily found in foods such as grains, fruits, and vegetables?

Accepted Answer

Carbohydrates

Question 17

A food contains 10 grams of fat. How much energy does this provide? (1 gram of fat = 9 kcal)

Accepted Answer

$10 	imes 9 = 90$ kcal

Question 18

Which of the following is NOT a function of proteins in the body?

Accepted Answer

Main source of cellular energy

Question 19

Which macronutrient is composed of long carbon chains, making them insoluble in water?

Accepted Answer

Lipids

Question 20

Which of the following statements about the composition of carbohydrates is correct?

Accepted Answer

Carbohydrates are composed of carbon, hydrogen, and oxygen.

Macronutrients: Carbohydrates, Lipids, and Proteins – Structure, Function, and Dietary Sources

Study Guide - Practice Questions