WGU D440 – HEALTH & WELLNESS THROUGH NUTRITIONAL SCIENCE | PRACTICE BANK
WGU D440 – Health and Wellness Through Nutritional Science
Objective Assessment Practice Bank
1000 Original Questions with Detailed Rationales
Macros • BMI • Lifespan • Therapeutic Diets • Guidelines & Nursing Role
DISCLAIMER – This is an ORIGINAL educational practice resource aligned with common nutrition competency themes. It is NOT an official WGU
exam or OA, NOT a reproduction of proprietary assessment items, and NOT medical advice. Always use your WGU D440 course of study, learning
resources, and pre-assessment as primary sources.
Section Mapping
Sec Topic Questions N
1 Macronutrients, Energy & Nutrient Density Q1-Q200 200
2 BMI, Weight Management & Basic Measures Q201-Q400 200
3 Nutrition Across the Lifespan Q401-Q600 200
4 Therapeutic Diets & Clinical Nutrition Q601-Q800 200
5 Guidelines, Food Safety & Nursing Role Q801-Q1000 200
TOTAL 1000
Quick facts: Carb/Protein 4 kcal/g • Fat 9 kcal/g • BMI normal 18.5–24.9 • 1 oz ≈ 30 mL • 1 cup = 8 oz
Original Study Resource | Page 1
, WGU D440 – HEALTH & WELLNESS THROUGH NUTRITIONAL SCIENCE | PRACTICE BANK
Section 1: Macronutrients, Energy & Nutrient Density
Q1: How many kilocalories does 1 gram of carbohydrate provide?
A. 9
B. 4 [CORRECT]
C. 7
D. 2
Correct Answer: B
Rationale: Carbohydrates provide about 4 kcal/g.
Q2: How many kilocalories does 1 gram of protein provide?
A. 9
B. 4 [CORRECT]
C. 7
D. 1
Correct Answer: B
Rationale: Protein provides about 4 kcal/g.
Q3: How many kilocalories does 1 gram of fat provide?
A. 4
B. 9 [CORRECT]
C. 2
D. 7
Correct Answer: B
Rationale: Fat provides about 9 kcal/g.
Original Study Resource | Page 2
, WGU D440 – HEALTH & WELLNESS THROUGH NUTRITIONAL SCIENCE | PRACTICE BANK
Q4: Alcohol provides approximately how many kcal per gram?
A. 4
B. 7 [CORRECT]
C. 9
D. 0
Correct Answer: B
Rationale: Alcohol is about 7 kcal/g.
Q5: Nutrient-dense foods are best described as foods that:
A. Are high only in empty calories
B. Provide substantial vitamins/minerals relative to calories [CORRECT]
C. Contain only fat
D. Have no protein
Correct Answer: B
Rationale: Nutrient density emphasizes micronutrients per calorie.
Q6: A primary function of dietary protein is to:
A. Only store energy as glycogen exclusively
B. Provide amino acids for tissue building and repair [CORRECT]
C. Replace all fluid needs
D. Eliminate the need for carbohydrates
Correct Answer: B
Rationale: Protein supports structure and physiologic functions.
Q7: Complex carbohydrates are found in foods such as:
A. Only table sugar
B. Whole grains, legumes, and starchy vegetables [CORRECT]
C. Only soft drinks
D. Only oils
Correct Answer: B
Rationale: Complex carbs include starches and fiber-rich foods.
Original Study Resource | Page 3
, WGU D440 – HEALTH & WELLNESS THROUGH NUTRITIONAL SCIENCE | PRACTICE BANK
Q8: Dietary fiber primarily helps with:
A. Increasing rapid blood glucose spikes always
B. Promoting bowel regularity and supporting metabolic health [CORRECT]
C. Providing 9 kcal/g
D. Replacing all protein needs
Correct Answer: B
Rationale: Fiber supports GI and metabolic benefits.
Q9: Essential fatty acids must be:
A. Synthesized in unlimited amounts by the body always
B. Obtained from the diet [CORRECT]
C. Avoided entirely
D. Only produced during fasting
Correct Answer: B
Rationale: Essential nutrients come from food.
Q10: Water-soluble vitamins generally:
A. Are stored in large amounts for years always
B. Are less likely to accumulate to toxic levels than many fat-soluble vitamins, and excess is
often excreted [CORRECT]
C. Include only vitamins A, D, E, K
D. Require no dietary intake
Correct Answer: B
Rationale: B vitamins and C are water-soluble.
Original Study Resource | Page 4
WGU D440 – Health and Wellness Through Nutritional Science
Objective Assessment Practice Bank
1000 Original Questions with Detailed Rationales
Macros • BMI • Lifespan • Therapeutic Diets • Guidelines & Nursing Role
DISCLAIMER – This is an ORIGINAL educational practice resource aligned with common nutrition competency themes. It is NOT an official WGU
exam or OA, NOT a reproduction of proprietary assessment items, and NOT medical advice. Always use your WGU D440 course of study, learning
resources, and pre-assessment as primary sources.
Section Mapping
Sec Topic Questions N
1 Macronutrients, Energy & Nutrient Density Q1-Q200 200
2 BMI, Weight Management & Basic Measures Q201-Q400 200
3 Nutrition Across the Lifespan Q401-Q600 200
4 Therapeutic Diets & Clinical Nutrition Q601-Q800 200
5 Guidelines, Food Safety & Nursing Role Q801-Q1000 200
TOTAL 1000
Quick facts: Carb/Protein 4 kcal/g • Fat 9 kcal/g • BMI normal 18.5–24.9 • 1 oz ≈ 30 mL • 1 cup = 8 oz
Original Study Resource | Page 1
, WGU D440 – HEALTH & WELLNESS THROUGH NUTRITIONAL SCIENCE | PRACTICE BANK
Section 1: Macronutrients, Energy & Nutrient Density
Q1: How many kilocalories does 1 gram of carbohydrate provide?
A. 9
B. 4 [CORRECT]
C. 7
D. 2
Correct Answer: B
Rationale: Carbohydrates provide about 4 kcal/g.
Q2: How many kilocalories does 1 gram of protein provide?
A. 9
B. 4 [CORRECT]
C. 7
D. 1
Correct Answer: B
Rationale: Protein provides about 4 kcal/g.
Q3: How many kilocalories does 1 gram of fat provide?
A. 4
B. 9 [CORRECT]
C. 2
D. 7
Correct Answer: B
Rationale: Fat provides about 9 kcal/g.
Original Study Resource | Page 2
, WGU D440 – HEALTH & WELLNESS THROUGH NUTRITIONAL SCIENCE | PRACTICE BANK
Q4: Alcohol provides approximately how many kcal per gram?
A. 4
B. 7 [CORRECT]
C. 9
D. 0
Correct Answer: B
Rationale: Alcohol is about 7 kcal/g.
Q5: Nutrient-dense foods are best described as foods that:
A. Are high only in empty calories
B. Provide substantial vitamins/minerals relative to calories [CORRECT]
C. Contain only fat
D. Have no protein
Correct Answer: B
Rationale: Nutrient density emphasizes micronutrients per calorie.
Q6: A primary function of dietary protein is to:
A. Only store energy as glycogen exclusively
B. Provide amino acids for tissue building and repair [CORRECT]
C. Replace all fluid needs
D. Eliminate the need for carbohydrates
Correct Answer: B
Rationale: Protein supports structure and physiologic functions.
Q7: Complex carbohydrates are found in foods such as:
A. Only table sugar
B. Whole grains, legumes, and starchy vegetables [CORRECT]
C. Only soft drinks
D. Only oils
Correct Answer: B
Rationale: Complex carbs include starches and fiber-rich foods.
Original Study Resource | Page 3
, WGU D440 – HEALTH & WELLNESS THROUGH NUTRITIONAL SCIENCE | PRACTICE BANK
Q8: Dietary fiber primarily helps with:
A. Increasing rapid blood glucose spikes always
B. Promoting bowel regularity and supporting metabolic health [CORRECT]
C. Providing 9 kcal/g
D. Replacing all protein needs
Correct Answer: B
Rationale: Fiber supports GI and metabolic benefits.
Q9: Essential fatty acids must be:
A. Synthesized in unlimited amounts by the body always
B. Obtained from the diet [CORRECT]
C. Avoided entirely
D. Only produced during fasting
Correct Answer: B
Rationale: Essential nutrients come from food.
Q10: Water-soluble vitamins generally:
A. Are stored in large amounts for years always
B. Are less likely to accumulate to toxic levels than many fat-soluble vitamins, and excess is
often excreted [CORRECT]
C. Include only vitamins A, D, E, K
D. Require no dietary intake
Correct Answer: B
Rationale: B vitamins and C are water-soluble.
Original Study Resource | Page 4
