Q: How many kilocalories (kcal) are provided by 10 grams of fat?

$$10 \ \mathrm{g} \times \frac{9 \ \mathrm{kcal}}{1 \ \mathrm{g}} = 90 \ \mathrm{kcal}$$

Q: A food label states that a serving contains 8 grams of protein, 15 grams of carbohydrate, and 5 grams of fat. What is the total energy content in kilocalories (kcal) for one serving?

$$8 \times 4 + 15 \times 4 + 5 \times 9 = 32 + 60 + 45 = 137 \ \mathrm{kcal}$$

Q: A nutritionist needs to convert 2.5 kilograms (kg) to grams (g). What is the correct calculation?

$$2.5 \ \mathrm{kg} \times \frac{1000 \ \mathrm{g}}{1 \ \mathrm{kg}} = 2500 \ \mathrm{g}$$

Q: A food contains 20 grams of carbohydrate, 5 grams of protein, and 2 grams of fat. How many total kilocalories does it provide?

$$20 \times 4 + 5 \times 4 + 2 \times 9 = 80 + 20 + 18 = 118 \ \mathrm{kcal}$$

Question 1

Which of the following best defines a nutrient?

Accepted Answer

A chemical the body needs to perform its basic functions.

Question 2

Which of the following statements about macronutrients is correct?

Accepted Answer

They include carbohydrates, lipids, proteins, and water.

Question 3

How many kilocalories (kcal) are provided by 10 grams of fat?

Accepted Answer

$$10 \ \mathrm{g} 	imes \frac{9 \ \mathrm{kcal}}{1 \ \mathrm{g}} = 90 \ \mathrm{kcal}$$

Question 4

Which of the following is an example of a micronutrient?

Accepted Answer

Vitamin C

Question 5

A food label states that a serving contains 8 grams of protein, 15 grams of carbohydrate, and 5 grams of fat. What is the total energy content in kilocalories (kcal) for one serving?

Accepted Answer

$$8 	imes 4 + 15 	imes 4 + 5 	imes 9 = 32 + 60 + 45 = 137 \ \mathrm{kcal}$$

Question 6

Which of the following statements about vitamins and minerals is TRUE?

Accepted Answer

Vitamins are organic and can be destroyed by heat, while minerals are inorganic and resistant to heat.

Question 7

Which of the following is a function of water in the human body?

Accepted Answer

Transports nutrients and oxygen throughout the body.

Question 8

A patient is diagnosed with night blindness. Which vitamin deficiency is most likely responsible?

Accepted Answer

Vitamin A

Question 9

Which of the following best describes the difference between simple and complex carbohydrates?

Accepted Answer

Simple carbohydrates consist of one or two sugar units, while complex carbohydrates are long chains of sugar monomers.

Question 10

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

Accepted Answer

Catalyzing chemical reactions as enzymes.

Question 11

A nutritionist needs to convert 2.5 kilograms (kg) to grams (g). What is the correct calculation?

Accepted Answer

$$2.5 \ \mathrm{kg} 	imes \frac{1000 \ \mathrm{g}}{1 \ \mathrm{kg}} = 2500 \ \mathrm{g}$$

Question 12

Which of the following is a trace mineral required in the human diet?

Accepted Answer

Iron

Question 13

A food contains 20 grams of carbohydrate, 5 grams of protein, and 2 grams of fat. How many total kilocalories does it provide?

Accepted Answer

$$20 	imes 4 + 5 	imes 4 + 2 	imes 9 = 80 + 20 + 18 = 118 \ \mathrm{kcal}$$

Question 14

Which of the following statements about essential nutrients is correct?

Accepted Answer

Essential nutrients must be obtained from the diet because the body cannot make them in sufficient amounts.

Question 15

Which of the following is a correct conversion factor for changing milligrams (mg) to grams (g)?

Accepted Answer

$$1 \ \mathrm{mg} = 0.001 \ \mathrm{g}$$

Question 16

Which of the following best describes the function of proteins in the body?

Accepted Answer

They provide structure to bones, muscles, and skin, and play a role in chemical reactions.

Question 17

A person consumes 300 kcal from carbohydrates. How many grams of carbohydrates did they eat?

Accepted Answer

$$300 \ \mathrm{kcal} 	imes \frac{1 \ \mathrm{g}}{4 \ \mathrm{kcal}} = 75 \ \mathrm{g}$$

Question 18

Which of the following is a water-soluble vitamin?

Accepted Answer

Vitamin C

Question 19

Which of the following is a correct statement about the metric system in nutrition?

Accepted Answer

A milligram is 1/1000th of a gram.

Introduction to Nutrition: Essential Concepts and Nutrient Classification

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