WGU D440 NUTRITION OBJECTIVE ASSESSMENT FINAL
EXAM AND PRACTICE EXAM NEWEST ACTUAL EXAM
COMPLETE 300 QUESTIONS AND CORRECT ANSWERS
Question 1
Which of the following macronutrients is the body's primary and most
preferred source of energy?
A) Proteins
B) Fats
C) Carbohydrates
D) Vitamins
E) Minerals
Correct Answer: C) Carbohydrates
Rationale: Carbohydrates are the body's primary and most efficient
source of energy, especially for the brain and muscles during
activity.
Question 2
A patient presents with symptoms of night blindness, dry eyes, and impaired
immune function. A deficiency in which fat-soluble vitamin should be
suspected?
A) Vitamin D
B) Vitamin K
C) Vitamin A
D) Vitamin E
E) Vitamin C
Correct Answer: C) Vitamin A
Rationale: Vitamin A is essential for vision (especially night vision),
immune function, and epithelial cell health. Deficiency can lead to
night blindness and xerophthalmia (dry eyes).
Question 3
Which of the following is an example of a complete protein?
A) Lentils
B) Peanut butter
,C) Rice
D) Quinoa
E) Corn
Correct Answer: D) Quinoa
Rationale: Complete proteins contain all nine essential amino acids in
adequate proportions. While most plant-based foods are
incomplete, quinoa is one of the few plant-based complete proteins,
along with soy and amaranth.
Question 4
What is the primary function of dietary fiber in the human body?
A) To provide concentrated energy.
B) To build and repair tissues.
C) To aid in digestion and promote bowel regularity.
D) To absorb fat-soluble vitamins.
E) To regulate blood pressure.
Correct Answer: C) To aid in digestion and promote bowel regularity.
Rationale: Dietary fiber, particularly insoluble fiber, adds bulk to
stool, facilitates its passage through the digestive tract, and helps
prevent constipation.
Question 5
Which of the following minerals is a major component of hemoglobin and is
essential for oxygen transport in the blood?
A) Calcium
B) Sodium
C) Iron
D) Potassium
E) Zinc
Correct Answer: C) Iron
Rationale: Iron is a crucial component of hemoglobin, the protein in
,red blood cells that binds and transports oxygen throughout the
body.
Question 6
Excessive intake of which fat-soluble vitamin can lead to toxicity symptoms
such as nausea, vomiting, bone pain, and hypercalcemia?
A) Vitamin A
B) Vitamin D
C) Vitamin E
D) Vitamin K
E) Vitamin C
Correct Answer: B) Vitamin D
Rationale: While essential, excessive intake of Vitamin D can lead to
hypercalcemia, causing symptoms like nausea, vomiting, weakness,
and bone pain due to increased calcium absorption.
Question 7
Which of the following is considered a healthy body mass index (BMI) range
for most adults?
A) Below 18.5 kg/m ²
B) 18.5 - 24.9 kg/m ²
C) 25.0 - 29.9 kg/m ²
D) 30.0 - 34.9 kg/m ²
E) 35.0 kg/m ² and above
Correct Answer: B) 18.5 - 24.9 kg/m ²
Rationale: A BMI between 18.5 and 24.9 kg/m ² is classified as a
healthy or normal weight for adults.
Question 8
What is the primary function of the small intestine in digestion?
A) To absorb water and electrolytes.
B) To churn food and initiate protein digestion.
C) To store bile and digestive enzymes.
, D) To complete chemical digestion and absorb most nutrients.
E) To produce insulin and glucagon.
Correct Answer: D) To complete chemical digestion and absorb most
nutrients.
Rationale: The small intestine is the primary site where the bulk of
chemical digestion occurs and where most nutrients (carbohydrates,
proteins, fats, vitamins, minerals, water) are absorbed into the
bloodstream.
Question 9
Which type of fat is typically solid at room temperature and is primarily found
in animal products and some tropical oils?
A) Monounsaturated fat
B) Polyunsaturated fat
C) Saturated fat
D) Trans fat
E) Essential fatty acid
Correct Answer: C) Saturated fat
Rationale: Saturated fats are characterized by having only single
bonds between carbon atoms and are typically solid at room
temperature, commonly found in meat, dairy, and coconut/palm oil.
Question 10
A pregnant woman is advised to increase her intake of folate (folic acid) to
prevent which birth defect?
A) Cleft palate
B) Down syndrome
C) Neural tube defects (e.g., spina bifida)
D) Heart defects
E) Low birth weight
Correct Answer: C) Neural tube defects (e.g., spina bifida)
Rationale: Adequate folate intake before and during early pregnancy
EXAM AND PRACTICE EXAM NEWEST ACTUAL EXAM
COMPLETE 300 QUESTIONS AND CORRECT ANSWERS
Question 1
Which of the following macronutrients is the body's primary and most
preferred source of energy?
A) Proteins
B) Fats
C) Carbohydrates
D) Vitamins
E) Minerals
Correct Answer: C) Carbohydrates
Rationale: Carbohydrates are the body's primary and most efficient
source of energy, especially for the brain and muscles during
activity.
Question 2
A patient presents with symptoms of night blindness, dry eyes, and impaired
immune function. A deficiency in which fat-soluble vitamin should be
suspected?
A) Vitamin D
B) Vitamin K
C) Vitamin A
D) Vitamin E
E) Vitamin C
Correct Answer: C) Vitamin A
Rationale: Vitamin A is essential for vision (especially night vision),
immune function, and epithelial cell health. Deficiency can lead to
night blindness and xerophthalmia (dry eyes).
Question 3
Which of the following is an example of a complete protein?
A) Lentils
B) Peanut butter
,C) Rice
D) Quinoa
E) Corn
Correct Answer: D) Quinoa
Rationale: Complete proteins contain all nine essential amino acids in
adequate proportions. While most plant-based foods are
incomplete, quinoa is one of the few plant-based complete proteins,
along with soy and amaranth.
Question 4
What is the primary function of dietary fiber in the human body?
A) To provide concentrated energy.
B) To build and repair tissues.
C) To aid in digestion and promote bowel regularity.
D) To absorb fat-soluble vitamins.
E) To regulate blood pressure.
Correct Answer: C) To aid in digestion and promote bowel regularity.
Rationale: Dietary fiber, particularly insoluble fiber, adds bulk to
stool, facilitates its passage through the digestive tract, and helps
prevent constipation.
Question 5
Which of the following minerals is a major component of hemoglobin and is
essential for oxygen transport in the blood?
A) Calcium
B) Sodium
C) Iron
D) Potassium
E) Zinc
Correct Answer: C) Iron
Rationale: Iron is a crucial component of hemoglobin, the protein in
,red blood cells that binds and transports oxygen throughout the
body.
Question 6
Excessive intake of which fat-soluble vitamin can lead to toxicity symptoms
such as nausea, vomiting, bone pain, and hypercalcemia?
A) Vitamin A
B) Vitamin D
C) Vitamin E
D) Vitamin K
E) Vitamin C
Correct Answer: B) Vitamin D
Rationale: While essential, excessive intake of Vitamin D can lead to
hypercalcemia, causing symptoms like nausea, vomiting, weakness,
and bone pain due to increased calcium absorption.
Question 7
Which of the following is considered a healthy body mass index (BMI) range
for most adults?
A) Below 18.5 kg/m ²
B) 18.5 - 24.9 kg/m ²
C) 25.0 - 29.9 kg/m ²
D) 30.0 - 34.9 kg/m ²
E) 35.0 kg/m ² and above
Correct Answer: B) 18.5 - 24.9 kg/m ²
Rationale: A BMI between 18.5 and 24.9 kg/m ² is classified as a
healthy or normal weight for adults.
Question 8
What is the primary function of the small intestine in digestion?
A) To absorb water and electrolytes.
B) To churn food and initiate protein digestion.
C) To store bile and digestive enzymes.
, D) To complete chemical digestion and absorb most nutrients.
E) To produce insulin and glucagon.
Correct Answer: D) To complete chemical digestion and absorb most
nutrients.
Rationale: The small intestine is the primary site where the bulk of
chemical digestion occurs and where most nutrients (carbohydrates,
proteins, fats, vitamins, minerals, water) are absorbed into the
bloodstream.
Question 9
Which type of fat is typically solid at room temperature and is primarily found
in animal products and some tropical oils?
A) Monounsaturated fat
B) Polyunsaturated fat
C) Saturated fat
D) Trans fat
E) Essential fatty acid
Correct Answer: C) Saturated fat
Rationale: Saturated fats are characterized by having only single
bonds between carbon atoms and are typically solid at room
temperature, commonly found in meat, dairy, and coconut/palm oil.
Question 10
A pregnant woman is advised to increase her intake of folate (folic acid) to
prevent which birth defect?
A) Cleft palate
B) Down syndrome
C) Neural tube defects (e.g., spina bifida)
D) Heart defects
E) Low birth weight
Correct Answer: C) Neural tube defects (e.g., spina bifida)
Rationale: Adequate folate intake before and during early pregnancy
