1
WGU C787 Nutrition and Food Safety
Exam 2026/2027 Actual Exam | 140
Questions with Accurate Solutions | Pass
Guaranteed - A+ Graded
Section 1: Nutrition Foundations
Q1: The primary function of carbohydrates in the body is:
A. Building cell membranes
B. Providing energy [CORRECT]
C. Synthesizing hormones
D. Transporting vitamins
Correct Answer: B
Rationale: Carbohydrates are the body's preferred source of energy, providing 4 kcal/gram.
Lipids build cell membranes and synthesize hormones. Proteins transport some vitamins.
Q2: A complete protein contains:
A. All essential amino acids in adequate amounts [CORRECT]
B. Only nonessential amino acids
C. No amino acids
D. Only one essential amino acid
Correct Answer: A
Rationale: A complete (high-quality) protein contains all nine essential amino acids in the
proportions needed by the body.
,2
Q3: Which of the following is an essential fatty acid?
A. Linoleic acid [CORRECT]
B. Stearic acid
C. Palmitic acid
D. Oleic acid
Correct Answer: A
Rationale: Linoleic acid (omega-6) and alpha-linolenic acid (omega-3) are essential fatty acids
that must be obtained through the diet. Stearic and palmitic acids are saturated fats; oleic acid is
monounsaturated.
Q4: Vitamins A, D, E, and K are classified as:
A. Water-soluble vitamins
B. Fat-soluble vitamins [CORRECT]
C. Macrominerals
D. Electrolytes
Correct Answer: B
Rationale: Vitamins A, D, E, and K are fat-soluble, meaning they are absorbed with dietary fat
and stored in the body's adipose tissue and liver.
Q5: A patient presents with bleeding gums and bruising. Which vitamin deficiency should be
suspected?
A. Vitamin A
B. Vitamin C [CORRECT]
C. Vitamin D
D. Vitamin K
,3
Correct Answer: B
Rationale: These are classic signs of scurvy, caused by Vitamin C deficiency, which impairs
collagen synthesis. While Vitamin K helps clotting, bleeding gums are specifically indicative of
Vitamin C deficiency.
Q6: Which mineral enhances the absorption of non-heme iron when consumed concurrently?
A. Calcium
B. Vitamin C [CORRECT]
C. Zinc
D. Magnesium
Correct Answer: B
Rationale: Vitamin C (ascorbic acid) significantly increases the absorption of non-heme iron
(plant-based iron) by reducing it to a more absorbable form. Calcium inhibits iron absorption.
Q7: The primary organ responsible for the production of bile is the:
A. Gallbladder
B. Liver [CORRECT]
C. Pancreas
D. Stomach
Correct Answer: B
Rationale: The liver produces bile, which is essential for emulsifying fats. The gallbladder stores
and concentrates bile, and the pancreas produces digestive enzymes.
Q8: Peristalsis refers to:
A. The breakdown of food by enzymes
B. Muscular contractions that move food through the GI tract [CORRECT]
, 4
C. The absorption of nutrients in the small intestine
D. The release of hormones from the stomach
Correct Answer: B
Rationale: Peristalsis is the involuntary, wave-like muscular contractions that propel food
through the esophagus and intestines.
Q9: Which macronutrient has the highest energy yield per gram?
A. Carbohydrates
B. Proteins
C. Lipids (Fats) [CORRECT]
D. Vitamins
Correct Answer: C
Rationale: Lipids provide 9 kcal/gram, whereas carbohydrates and proteins provide 4 kcal/gram.
Vitamins do not provide energy.
Q10: A patient is diagnosed with edema and has a low serum albumin level. This is indicative of:
A. Kwashiorkor [CORRECT]
B. Marasmus
C. Dehydration
D. Overhydration
Correct Answer: A
Rationale: Kwashiorkor is a form of protein-energy malnutrition characterized by edema (fluid
retention) due to insufficient protein intake to maintain oncotic pressure, despite potentially
adequate calorie intake. Marasmus involves a deficiency in both calories and protein, leading to
severe wasting without edema.
WGU C787 Nutrition and Food Safety
Exam 2026/2027 Actual Exam | 140
Questions with Accurate Solutions | Pass
Guaranteed - A+ Graded
Section 1: Nutrition Foundations
Q1: The primary function of carbohydrates in the body is:
A. Building cell membranes
B. Providing energy [CORRECT]
C. Synthesizing hormones
D. Transporting vitamins
Correct Answer: B
Rationale: Carbohydrates are the body's preferred source of energy, providing 4 kcal/gram.
Lipids build cell membranes and synthesize hormones. Proteins transport some vitamins.
Q2: A complete protein contains:
A. All essential amino acids in adequate amounts [CORRECT]
B. Only nonessential amino acids
C. No amino acids
D. Only one essential amino acid
Correct Answer: A
Rationale: A complete (high-quality) protein contains all nine essential amino acids in the
proportions needed by the body.
,2
Q3: Which of the following is an essential fatty acid?
A. Linoleic acid [CORRECT]
B. Stearic acid
C. Palmitic acid
D. Oleic acid
Correct Answer: A
Rationale: Linoleic acid (omega-6) and alpha-linolenic acid (omega-3) are essential fatty acids
that must be obtained through the diet. Stearic and palmitic acids are saturated fats; oleic acid is
monounsaturated.
Q4: Vitamins A, D, E, and K are classified as:
A. Water-soluble vitamins
B. Fat-soluble vitamins [CORRECT]
C. Macrominerals
D. Electrolytes
Correct Answer: B
Rationale: Vitamins A, D, E, and K are fat-soluble, meaning they are absorbed with dietary fat
and stored in the body's adipose tissue and liver.
Q5: A patient presents with bleeding gums and bruising. Which vitamin deficiency should be
suspected?
A. Vitamin A
B. Vitamin C [CORRECT]
C. Vitamin D
D. Vitamin K
,3
Correct Answer: B
Rationale: These are classic signs of scurvy, caused by Vitamin C deficiency, which impairs
collagen synthesis. While Vitamin K helps clotting, bleeding gums are specifically indicative of
Vitamin C deficiency.
Q6: Which mineral enhances the absorption of non-heme iron when consumed concurrently?
A. Calcium
B. Vitamin C [CORRECT]
C. Zinc
D. Magnesium
Correct Answer: B
Rationale: Vitamin C (ascorbic acid) significantly increases the absorption of non-heme iron
(plant-based iron) by reducing it to a more absorbable form. Calcium inhibits iron absorption.
Q7: The primary organ responsible for the production of bile is the:
A. Gallbladder
B. Liver [CORRECT]
C. Pancreas
D. Stomach
Correct Answer: B
Rationale: The liver produces bile, which is essential for emulsifying fats. The gallbladder stores
and concentrates bile, and the pancreas produces digestive enzymes.
Q8: Peristalsis refers to:
A. The breakdown of food by enzymes
B. Muscular contractions that move food through the GI tract [CORRECT]
, 4
C. The absorption of nutrients in the small intestine
D. The release of hormones from the stomach
Correct Answer: B
Rationale: Peristalsis is the involuntary, wave-like muscular contractions that propel food
through the esophagus and intestines.
Q9: Which macronutrient has the highest energy yield per gram?
A. Carbohydrates
B. Proteins
C. Lipids (Fats) [CORRECT]
D. Vitamins
Correct Answer: C
Rationale: Lipids provide 9 kcal/gram, whereas carbohydrates and proteins provide 4 kcal/gram.
Vitamins do not provide energy.
Q10: A patient is diagnosed with edema and has a low serum albumin level. This is indicative of:
A. Kwashiorkor [CORRECT]
B. Marasmus
C. Dehydration
D. Overhydration
Correct Answer: A
Rationale: Kwashiorkor is a form of protein-energy malnutrition characterized by edema (fluid
retention) due to insufficient protein intake to maintain oncotic pressure, despite potentially
adequate calorie intake. Marasmus involves a deficiency in both calories and protein, leading to
severe wasting without edema.
