WGU D440 HEALTH AND WELLNESS
THROUGH NUTRITIONAL SCIENCE | PA |
PRE-ASSESSMENT | EXAM QUESTIONS
AND WELL DETAILED ANSWERS | LATEST
UPDATE 2026
1. Which macronutrient is the body’s primary energy source?
A. Protein
B. Fat
C. Carbohydrate
D. Vitamin
Answer: C
Rationale: Carbohydrates are the preferred and quickest fuel source.
2. Each gram of carbohydrate provides how many calories?
A. 2
B. 4
C. 7
D. 9
Answer: B
Rationale: Carbs and protein = 4 kcal/g.
3. Which nutrient provides 9 calories per gram?
A. Protein
B. Alcohol
C. Fat
D. Fiber
Answer: C
Rationale: Fat is the most energy-dense macronutrient.
,4. Which is a complete protein source?
A. Rice
B. Beans
C. Almonds
D. Eggs
Answer: D
Rationale: Contains all essential amino acids.
5. Essential amino acids must be obtained from:
A. Liver
B. Exercise
C. Diet
D. Sunlight
Answer: C
Rationale: Body cannot synthesize them.
6. Which fat is considered heart-healthy?
A. Trans fat
B. Saturated fat
C. Monounsaturated fat
D. Hydrogenated fat
Answer: C
Rationale: Improves lipid profile.
7. Main function of fiber:
A. Build muscle
B. Provide calories
C. Aid digestion
D. Store vitamins
,Answer: C
Rationale: Promotes bowel regularity.
8. Soluble fiber helps lower:
A. Blood sugar only
B. Cholesterol
C. Iron
D. Sodium
Answer: B
Rationale: Binds cholesterol in gut.
9. Which vitamin is fat-soluble?
A. Vitamin C
B. Vitamin B12
C. Vitamin D
D. Folate
Answer: C
Rationale: Fat-soluble = A, D, E, K.
10. Water-soluble vitamins are stored in large amounts?
A. Yes
B. No
C. Only B vitamins
D. Only C
Answer: B
Rationale: Excess excreted in urine.
Digestion & Absorption
11. Digestion begins in the:
, A. Stomach
B. Small intestine
C. Mouth
D. Liver
Answer: C
Rationale: Saliva contains amylase.
12. Most nutrient absorption occurs in the:
A. Colon
B. Stomach
C. Small intestine
D. Esophagus
Answer: C
13. Bile is produced by the:
A. Pancreas
B. Liver
C. Stomach
D. Kidney
Answer: B
14. Bile helps digest:
A. Protein
B. Carbs
C. Vitamins
D. Fats
Answer: D
15. Enzyme that breaks down protein:
THROUGH NUTRITIONAL SCIENCE | PA |
PRE-ASSESSMENT | EXAM QUESTIONS
AND WELL DETAILED ANSWERS | LATEST
UPDATE 2026
1. Which macronutrient is the body’s primary energy source?
A. Protein
B. Fat
C. Carbohydrate
D. Vitamin
Answer: C
Rationale: Carbohydrates are the preferred and quickest fuel source.
2. Each gram of carbohydrate provides how many calories?
A. 2
B. 4
C. 7
D. 9
Answer: B
Rationale: Carbs and protein = 4 kcal/g.
3. Which nutrient provides 9 calories per gram?
A. Protein
B. Alcohol
C. Fat
D. Fiber
Answer: C
Rationale: Fat is the most energy-dense macronutrient.
,4. Which is a complete protein source?
A. Rice
B. Beans
C. Almonds
D. Eggs
Answer: D
Rationale: Contains all essential amino acids.
5. Essential amino acids must be obtained from:
A. Liver
B. Exercise
C. Diet
D. Sunlight
Answer: C
Rationale: Body cannot synthesize them.
6. Which fat is considered heart-healthy?
A. Trans fat
B. Saturated fat
C. Monounsaturated fat
D. Hydrogenated fat
Answer: C
Rationale: Improves lipid profile.
7. Main function of fiber:
A. Build muscle
B. Provide calories
C. Aid digestion
D. Store vitamins
,Answer: C
Rationale: Promotes bowel regularity.
8. Soluble fiber helps lower:
A. Blood sugar only
B. Cholesterol
C. Iron
D. Sodium
Answer: B
Rationale: Binds cholesterol in gut.
9. Which vitamin is fat-soluble?
A. Vitamin C
B. Vitamin B12
C. Vitamin D
D. Folate
Answer: C
Rationale: Fat-soluble = A, D, E, K.
10. Water-soluble vitamins are stored in large amounts?
A. Yes
B. No
C. Only B vitamins
D. Only C
Answer: B
Rationale: Excess excreted in urine.
Digestion & Absorption
11. Digestion begins in the:
, A. Stomach
B. Small intestine
C. Mouth
D. Liver
Answer: C
Rationale: Saliva contains amylase.
12. Most nutrient absorption occurs in the:
A. Colon
B. Stomach
C. Small intestine
D. Esophagus
Answer: C
13. Bile is produced by the:
A. Pancreas
B. Liver
C. Stomach
D. Kidney
Answer: B
14. Bile helps digest:
A. Protein
B. Carbs
C. Vitamins
D. Fats
Answer: D
15. Enzyme that breaks down protein:
