WGU D-440– Health and wellness through nutritional
science Practice Questions with Answers and
Evidence-Based 2026/2027 Graded A+
Teeth
Tongue
Stomach
Esophagus
What parts of the body are involved in mechanical digestion?
Select all that apply.
Teeth
Tongue
Stomach
Pancreas
Esophagus
Large intestine
Nutrition
The intake of food, considered in relation to the body's dietary needs
Nutrition science
The study of the effects of food components on the metabolism, health,
performance, and disease resistance of human beings and animals
Dietetics
,The use of evidence-based practices in the area of food and nutrition to
improve and maintain good health
Registered dietitian nutritionist (RDN)
Food and nutrition expert who has met specific academic and training
criteria to earn the nationally accredited RDN license
Health
A state of complete physical, mental, and social well-being and not
merely the absence of disease or infirmity
Wellness
Full potential development for all people within their environments
Health promotion
The process of enabling people to increase control over and improve
their health
essential, nonessential, and energy-yielding
Nutrients in food are important components in maintaining the health
and well-being of an individual, and they provide significant
contributions to enable proper functioning of the body's systems.
Nutrients obtained from the diet are further categorized as
_____________ nutrients.
Essential nutrients
Nutrients that the body cannot synthesize on its own—or not in an
adequate amount—and must be provided by the diet. They are
necessary for the body to function properly.
Examples: include carbohydrates, protein, fat, vitamins, minerals, and
water.
,1. Carbohydrates
2. Protein
3. Fats
4. Vitamins
5. Minerals
6. Water
What are the 6 essential nutrients?
Nonessential nutrients
Nutrients that are made naturally in the body. They can also be
absorbed through certain foods. Even though they are referred to as
nonessential, they are still important in maintaining health.
Examples: amino acids and cholesterol.
1. Amino acids
2. Cholesterol
What are 2 examples of nonessential nutrients?
Energy yielding nutrients
Nutrients that provide the body with energy that is measured in calories.
Energy-yielding nutrients are also known as macronutrients because
they are required by the body in large quantities relative to
micronutrient requirements (e.g., vitamins and minerals).
Examples: Carbohydrates, fats, and proteins.
1. Carbohydrates
2. Fats
3. Proteins
What are 3 examples of energy yielding nutrients?
, nutrient density
The _________ of an individual food is an important factor in
determining which foods to include in the diet. ____________ refers to
how many nutrients are present in a food, given the number of calories
it contains. It is a simple way to connect nutrients with calories.
vegetables, fruits, whole grains, seafood, eggs, beans and peas, unsalted
nuts and seeds, fat-free and low-fat dairy products, and lean meats and
poultry
Examples of nutrient-rich (or nutrient-dense) foods include
____________.
empty calories
Examples of foods that are not nutrient dense include cookies, soda,
French fries, and processed meats. Some of these foods may contain
important nutrients, but the overall quantity of nutrients per calorie is
low. Some of the foods (e.g., soda) are referred to
as ____________ because they provide calories but no nutrients.
smooth skin, clear and bright eyes, and resistance to infection
Good nutrition is a significant factor in the body's ability to maintain a
state of wellness because each cell in the body is affected by the
nutrients that are provided to it. Signs of good nutrition include
____________.
proportional to height
An individual's body weight should be ___________. A healthy body
exhibits a good ratio of muscle to fat mass, as well as good muscular
development.
healthy immune system and reducing the risk of infectious diseases and
nutrition-related chronic diseases
science Practice Questions with Answers and
Evidence-Based 2026/2027 Graded A+
Teeth
Tongue
Stomach
Esophagus
What parts of the body are involved in mechanical digestion?
Select all that apply.
Teeth
Tongue
Stomach
Pancreas
Esophagus
Large intestine
Nutrition
The intake of food, considered in relation to the body's dietary needs
Nutrition science
The study of the effects of food components on the metabolism, health,
performance, and disease resistance of human beings and animals
Dietetics
,The use of evidence-based practices in the area of food and nutrition to
improve and maintain good health
Registered dietitian nutritionist (RDN)
Food and nutrition expert who has met specific academic and training
criteria to earn the nationally accredited RDN license
Health
A state of complete physical, mental, and social well-being and not
merely the absence of disease or infirmity
Wellness
Full potential development for all people within their environments
Health promotion
The process of enabling people to increase control over and improve
their health
essential, nonessential, and energy-yielding
Nutrients in food are important components in maintaining the health
and well-being of an individual, and they provide significant
contributions to enable proper functioning of the body's systems.
Nutrients obtained from the diet are further categorized as
_____________ nutrients.
Essential nutrients
Nutrients that the body cannot synthesize on its own—or not in an
adequate amount—and must be provided by the diet. They are
necessary for the body to function properly.
Examples: include carbohydrates, protein, fat, vitamins, minerals, and
water.
,1. Carbohydrates
2. Protein
3. Fats
4. Vitamins
5. Minerals
6. Water
What are the 6 essential nutrients?
Nonessential nutrients
Nutrients that are made naturally in the body. They can also be
absorbed through certain foods. Even though they are referred to as
nonessential, they are still important in maintaining health.
Examples: amino acids and cholesterol.
1. Amino acids
2. Cholesterol
What are 2 examples of nonessential nutrients?
Energy yielding nutrients
Nutrients that provide the body with energy that is measured in calories.
Energy-yielding nutrients are also known as macronutrients because
they are required by the body in large quantities relative to
micronutrient requirements (e.g., vitamins and minerals).
Examples: Carbohydrates, fats, and proteins.
1. Carbohydrates
2. Fats
3. Proteins
What are 3 examples of energy yielding nutrients?
, nutrient density
The _________ of an individual food is an important factor in
determining which foods to include in the diet. ____________ refers to
how many nutrients are present in a food, given the number of calories
it contains. It is a simple way to connect nutrients with calories.
vegetables, fruits, whole grains, seafood, eggs, beans and peas, unsalted
nuts and seeds, fat-free and low-fat dairy products, and lean meats and
poultry
Examples of nutrient-rich (or nutrient-dense) foods include
____________.
empty calories
Examples of foods that are not nutrient dense include cookies, soda,
French fries, and processed meats. Some of these foods may contain
important nutrients, but the overall quantity of nutrients per calorie is
low. Some of the foods (e.g., soda) are referred to
as ____________ because they provide calories but no nutrients.
smooth skin, clear and bright eyes, and resistance to infection
Good nutrition is a significant factor in the body's ability to maintain a
state of wellness because each cell in the body is affected by the
nutrients that are provided to it. Signs of good nutrition include
____________.
proportional to height
An individual's body weight should be ___________. A healthy body
exhibits a good ratio of muscle to fat mass, as well as good muscular
development.
healthy immune system and reducing the risk of infectious diseases and
nutrition-related chronic diseases
