WGU D440 Nutrition OA Exam Study Guide Questions 2026 UPDATE
1. How many kilocalories are provided by one gram of dietary fat?
A. 4 kcal/g
B. 7 kcal/g
C. 9 kcal/g
D. 12 kcal/g
Answer: C
Rationale: Dietary fat is the most energy-dense macronutrient, providing 9 kilocalories per
gram, compared to 4 for carbohydrates and proteins.
2. Which vitamin is primarily synthesized in the skin upon exposure to ultraviolet (UV) light?
A. Vitamin A
B. Vitamin K
C. Vitamin E
D. Vitamin D
Answer: D
Rationale: Vitamin D is known as the ‘sunshine vitamin’ because the body can synthesize it
when skin is exposed to UVB rays.
,3. According to the Dietary Guidelines for Americans, what is the recommended limit for
added sugars?
A. Less than 10% of total daily calories
B. Less than 5% of total daily calories
C. Less than 15% of total daily calories
D. Less than 20% of total daily calories
Answer: A
Rationale: The Dietary Guidelines for Americans recommend limiting added sugars to less
than 10% of total daily caloric intake to reduce the risk of chronic disease.
4. A food label states a product is a ‘High Source’ of fiber. What percentage of the Daily Value
(DV) must it contain?
A. At least 20% DV
B. At least 10% DV
C. At least 15% DV
D. At least 5% DV
Answer: A
Rationale: A food is considered ‘high’ in a nutrient if it contains 20% or more of the Daily
Value per serving.
, 5. Which mineral is most closely associated with the prevention of neural tube defects during
pregnancy?
A. Iron
B. Calcium
C. Zinc
D. Folate (Folic Acid)
Answer: D
Rationale: Folate is essential for DNA synthesis and cell division; adequate intake before
and during early pregnancy significantly reduces the risk of neural tube defects.
6. What is the Body Mass Index (BMI) range classified as ‘Overweight’ for adults?
A. 18.5 to 24.9
B. 35.0 or higher
C. 30.0 to 34.9
D. 25.0 to 29.9
Answer: D
Rationale: BMI between 25.0 and 29.9 is categorized as overweight, while 18.5 to 24.9 is
considered normal weight.
7. Which of the following foods is a significant source of monounsaturated fats?
A. Butter
1. How many kilocalories are provided by one gram of dietary fat?
A. 4 kcal/g
B. 7 kcal/g
C. 9 kcal/g
D. 12 kcal/g
Answer: C
Rationale: Dietary fat is the most energy-dense macronutrient, providing 9 kilocalories per
gram, compared to 4 for carbohydrates and proteins.
2. Which vitamin is primarily synthesized in the skin upon exposure to ultraviolet (UV) light?
A. Vitamin A
B. Vitamin K
C. Vitamin E
D. Vitamin D
Answer: D
Rationale: Vitamin D is known as the ‘sunshine vitamin’ because the body can synthesize it
when skin is exposed to UVB rays.
,3. According to the Dietary Guidelines for Americans, what is the recommended limit for
added sugars?
A. Less than 10% of total daily calories
B. Less than 5% of total daily calories
C. Less than 15% of total daily calories
D. Less than 20% of total daily calories
Answer: A
Rationale: The Dietary Guidelines for Americans recommend limiting added sugars to less
than 10% of total daily caloric intake to reduce the risk of chronic disease.
4. A food label states a product is a ‘High Source’ of fiber. What percentage of the Daily Value
(DV) must it contain?
A. At least 20% DV
B. At least 10% DV
C. At least 15% DV
D. At least 5% DV
Answer: A
Rationale: A food is considered ‘high’ in a nutrient if it contains 20% or more of the Daily
Value per serving.
, 5. Which mineral is most closely associated with the prevention of neural tube defects during
pregnancy?
A. Iron
B. Calcium
C. Zinc
D. Folate (Folic Acid)
Answer: D
Rationale: Folate is essential for DNA synthesis and cell division; adequate intake before
and during early pregnancy significantly reduces the risk of neural tube defects.
6. What is the Body Mass Index (BMI) range classified as ‘Overweight’ for adults?
A. 18.5 to 24.9
B. 35.0 or higher
C. 30.0 to 34.9
D. 25.0 to 29.9
Answer: D
Rationale: BMI between 25.0 and 29.9 is categorized as overweight, while 18.5 to 24.9 is
considered normal weight.
7. Which of the following foods is a significant source of monounsaturated fats?
A. Butter
