WILLIAMS BASIC NUTRITION AND DIET THERAPY
16TH EDITION EXAM QUESTIONS AND CORRECT
ANSWERS (VRIFIED ANSWERS) Q&A 2026/2027
|INSTANT DOWNLOAD PDF
1. Which nutrient provides the body with the greatest amount
of energy per gram?
A. Carbohydrates
B. Proteins
C. Fats
D. Vitamins
Correct answer: C. Fats
Rationale: Fat provides approximately 9 kcal/g, while
carbohydrates and proteins provide about 4 kcal/g. Vitamins do
not provide energy.
2. The primary function of carbohydrates in the body is to:
A. Build muscle tissue
B. Provide energy for cells
C. Regulate fluid balance
D. Form hormones
Correct answer: B. Provide energy for cells
,Rationale: Carbohydrates are the body's preferred and most
efficient energy source, especially for the brain and muscles.
3. Which organ plays the major role in regulating blood
glucose levels?
A. Heart
B. Liver
C. Kidney
D. Lung
Correct answer: B. Liver
Rationale: The liver stores glucose as glycogen and releases
glucose when needed to maintain normal blood glucose levels.
4. Which carbohydrate is classified as a simple sugar?
A. Starch
B. Glycogen
C. Glucose
D. Fiber
Correct answer: C. Glucose
Rationale: Glucose is a monosaccharide, a simple carbohydrate
that can be directly used for energy.
5. Dietary fiber is important because it:
,A. Increases cholesterol absorption
B. Helps regulate bowel function
C. Provides large amounts of calories
D. Prevents protein digestion
Correct answer: B. Helps regulate bowel function
Rationale: Fiber promotes normal bowel movements, improves
gastrointestinal health, and may help reduce cholesterol levels.
6. Which nutrient is primarily responsible for tissue growth
and repair?
A. Protein
B. Fat
C. Water
D. Carbohydrate
Correct answer: A. Protein
Rationale: Proteins provide amino acids needed for building
and repairing body tissues.
7. Essential amino acids are those that:
A. Are produced by the body
B. Must be obtained from food
C. Are stored in large amounts
D. Provide energy only
, Correct answer: B. Must be obtained from food
Rationale: Essential amino acids cannot be synthesized by the
body and must come from dietary sources.
8. Which food is considered a complete protein source?
A. Rice
B. Eggs
C. Apples
D. Butter
Correct answer: B. Eggs
Rationale: Complete proteins contain all essential amino acids
in adequate amounts. Animal proteins such as eggs are
complete proteins.
9. Which vitamin is fat-soluble?
A. Vitamin C
B. Vitamin B12
C. Vitamin A
D. Folate
Correct answer: C. Vitamin A
Rationale: Fat-soluble vitamins include A, D, E, and K and can
be stored in body tissues.
16TH EDITION EXAM QUESTIONS AND CORRECT
ANSWERS (VRIFIED ANSWERS) Q&A 2026/2027
|INSTANT DOWNLOAD PDF
1. Which nutrient provides the body with the greatest amount
of energy per gram?
A. Carbohydrates
B. Proteins
C. Fats
D. Vitamins
Correct answer: C. Fats
Rationale: Fat provides approximately 9 kcal/g, while
carbohydrates and proteins provide about 4 kcal/g. Vitamins do
not provide energy.
2. The primary function of carbohydrates in the body is to:
A. Build muscle tissue
B. Provide energy for cells
C. Regulate fluid balance
D. Form hormones
Correct answer: B. Provide energy for cells
,Rationale: Carbohydrates are the body's preferred and most
efficient energy source, especially for the brain and muscles.
3. Which organ plays the major role in regulating blood
glucose levels?
A. Heart
B. Liver
C. Kidney
D. Lung
Correct answer: B. Liver
Rationale: The liver stores glucose as glycogen and releases
glucose when needed to maintain normal blood glucose levels.
4. Which carbohydrate is classified as a simple sugar?
A. Starch
B. Glycogen
C. Glucose
D. Fiber
Correct answer: C. Glucose
Rationale: Glucose is a monosaccharide, a simple carbohydrate
that can be directly used for energy.
5. Dietary fiber is important because it:
,A. Increases cholesterol absorption
B. Helps regulate bowel function
C. Provides large amounts of calories
D. Prevents protein digestion
Correct answer: B. Helps regulate bowel function
Rationale: Fiber promotes normal bowel movements, improves
gastrointestinal health, and may help reduce cholesterol levels.
6. Which nutrient is primarily responsible for tissue growth
and repair?
A. Protein
B. Fat
C. Water
D. Carbohydrate
Correct answer: A. Protein
Rationale: Proteins provide amino acids needed for building
and repairing body tissues.
7. Essential amino acids are those that:
A. Are produced by the body
B. Must be obtained from food
C. Are stored in large amounts
D. Provide energy only
, Correct answer: B. Must be obtained from food
Rationale: Essential amino acids cannot be synthesized by the
body and must come from dietary sources.
8. Which food is considered a complete protein source?
A. Rice
B. Eggs
C. Apples
D. Butter
Correct answer: B. Eggs
Rationale: Complete proteins contain all essential amino acids
in adequate amounts. Animal proteins such as eggs are
complete proteins.
9. Which vitamin is fat-soluble?
A. Vitamin C
B. Vitamin B12
C. Vitamin A
D. Folate
Correct answer: C. Vitamin A
Rationale: Fat-soluble vitamins include A, D, E, and K and can
be stored in body tissues.
