Q: If a food contains 10 grams of carbohydrates, 5 grams of protein, and 2 grams of fat, what is the total caloric content? (Use $$4 \text{ kcal/g}$$ for carbohydrates and protein, $$9 \text{ kcal/g}$$ for fat.)

$$10 \times 4 + 5 \times 4 + 2 \times 9 = 40 + 20 + 18 = 78 \text{ kcal}$$

Question 1

Which of the following best defines the science of nutrition?

Accepted Answer

The study of how nutrients in food sustain biological functions and overall health.

Question 2

Which of the following is NOT considered a macronutrient?

Accepted Answer

Vitamins

Question 3

What is the primary function of carbohydrates in the human diet?

Accepted Answer

To provide energy for bodily functions.

Question 4

Which of the following statements about micronutrients is correct?

Accepted Answer

They are needed in small amounts and do not provide energy.

Question 5

A person is consuming a diet high in calories but low in vitamins and minerals. Which nutrient class is most likely lacking?

Accepted Answer

Micronutrients

Question 6

Which of the following is a correct example of a micronutrient?

Accepted Answer

Vitamin C

Question 7

If a food contains 10 grams of carbohydrates, 5 grams of protein, and 2 grams of fat, what is the total caloric content? (Use $$4 	ext{ kcal/g}$$ for carbohydrates and protein, $$9 	ext{ kcal/g}$$ for fat.)

Accepted Answer

$$10 	imes 4 + 5 	imes 4 + 2 	imes 9 = 40 + 20 + 18 = 78 	ext{ kcal}$$

Question 8

Which of the following nutrients is classified as a macronutrient and is essential for growth and maintenance?

Accepted Answer

Protein

Question 9

Why are most vitamins and minerals considered essential nutrients?

Accepted Answer

Because the body cannot synthesize them in sufficient amounts and they must be obtained from food.

Question 10

Which of the following statements about water as a nutrient is correct?

Accepted Answer

Water is an essential nutrient but does not provide energy.

Question 11

A student claims that vitamins are a source of energy for the body. Which of the following best evaluates this claim?

Accepted Answer

The claim is incorrect because vitamins do not provide energy (calories).

Question 12

Which of the following best describes the difference between macronutrients and micronutrients?

Accepted Answer

Macronutrients are needed in larger amounts and provide energy, while micronutrients are needed in smaller amounts and do not provide energy.

Question 13

Which of the following is NOT a function of essential nutrients?

Accepted Answer

Regulating body temperature through sweating alone.

Question 14

A person is following a diet that excludes all fats. Which of the following health consequences is most likely?

Accepted Answer

Deficiency in essential fatty acids and fat-soluble vitamins.

Question 15

Which of the following nutrients is NOT a source of calories?

Accepted Answer

Minerals

Introduction to Nutrition and Essential Nutrients

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