NUTR 3350 FINAL QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) Q&A 2026
|INSTANT DOWNLOAD PDF
1. Which macronutrient provides the most energy per gram?
A. Carbohydrates
B. Protein
C. Fat
D. Alcohol
Correct Answer: C. Fat
Rationale: Fat provides 9 kcal/g, which is more than
carbohydrates (4 kcal/g) and protein (4 kcal/g).
2. Which vitamin is fat-soluble?
A. Vitamin C
B. Vitamin B12
C. Vitamin A
D. Biotin
Correct Answer: C. Vitamin A
Rationale: Fat-soluble vitamins include A, D, E, and K, which are
stored in the liver and adipose tissue.
3. What is the primary site of nutrient absorption in the
digestive system?
A. Stomach
B. Small intestine
,C. Large intestine
D. Esophagus
Correct Answer: B. Small intestine
Rationale: The small intestine, especially the jejunum and
ileum, is the main site for absorption of most nutrients.
4. Which macronutrient is essential for muscle repair and
enzyme production?
A. Carbohydrates
B. Lipids
C. Protein
D. Fiber
Correct Answer: C. Protein
Rationale: Proteins provide amino acids necessary for tissue
repair, enzyme production, and other vital functions.
5. Which mineral is most important for oxygen transport in
the blood?
A. Calcium
B. Sodium
C. Iron
D. Zinc
Correct Answer: C. Iron
Rationale: Iron is a key component of hemoglobin, which
carries oxygen in red blood cells.
6. What is the primary function of dietary fiber?
,A. Energy production
B. Blood clotting
C. Digestive regulation
D. Hormone synthesis
Correct Answer: C. Digestive regulation
Rationale: Fiber promotes bowel regularity, supports gut
microbiota, and can aid in cholesterol management.
7. Which nutrient deficiency causes scurvy?
A. Vitamin A
B. Vitamin D
C. Vitamin C
D. Niacin
Correct Answer: C. Vitamin C
Rationale: Vitamin C deficiency leads to impaired collagen
synthesis, causing bleeding gums and poor wound healing.
8. What is the main storage form of glucose in the human
body?
A. Glycogen
B. Starch
C. Glucagon
D. Fructose
Correct Answer: A. Glycogen
Rationale: Glycogen is stored in the liver and muscles and can
be broken down into glucose when energy is needed.
9. Which fatty acid is considered essential?
, A. Oleic acid
B. Linoleic acid
C. Palmitic acid
D. Stearic acid
Correct Answer: B. Linoleic acid
Rationale: Essential fatty acids, like linoleic (omega-6) and
alpha-linolenic (omega-3), cannot be synthesized by the body.
10. What is the RDA of protein for a healthy adult?
A. 0.8 g/kg body weight
B. 1.2 g/kg body weight
C. 2.0 g/kg body weight
D. 3.0 g/kg body weight
Correct Answer: A. 0.8 g/kg body weight
Rationale: The Recommended Dietary Allowance for protein in
healthy adults is 0.8 g per kg of body weight per day.
11. Which vitamin is synthesized in the skin upon exposure to
sunlight?
A. Vitamin B12
B. Vitamin D
C. Vitamin K
D. Vitamin E
Correct Answer: B. Vitamin D
Rationale: UVB rays from sunlight trigger the conversion of 7-
dehydrocholesterol to vitamin D3 in the skin.
12. What is the main role of antioxidants in the body?
ANSWERS (VERIFIED ANSWERS) Q&A 2026
|INSTANT DOWNLOAD PDF
1. Which macronutrient provides the most energy per gram?
A. Carbohydrates
B. Protein
C. Fat
D. Alcohol
Correct Answer: C. Fat
Rationale: Fat provides 9 kcal/g, which is more than
carbohydrates (4 kcal/g) and protein (4 kcal/g).
2. Which vitamin is fat-soluble?
A. Vitamin C
B. Vitamin B12
C. Vitamin A
D. Biotin
Correct Answer: C. Vitamin A
Rationale: Fat-soluble vitamins include A, D, E, and K, which are
stored in the liver and adipose tissue.
3. What is the primary site of nutrient absorption in the
digestive system?
A. Stomach
B. Small intestine
,C. Large intestine
D. Esophagus
Correct Answer: B. Small intestine
Rationale: The small intestine, especially the jejunum and
ileum, is the main site for absorption of most nutrients.
4. Which macronutrient is essential for muscle repair and
enzyme production?
A. Carbohydrates
B. Lipids
C. Protein
D. Fiber
Correct Answer: C. Protein
Rationale: Proteins provide amino acids necessary for tissue
repair, enzyme production, and other vital functions.
5. Which mineral is most important for oxygen transport in
the blood?
A. Calcium
B. Sodium
C. Iron
D. Zinc
Correct Answer: C. Iron
Rationale: Iron is a key component of hemoglobin, which
carries oxygen in red blood cells.
6. What is the primary function of dietary fiber?
,A. Energy production
B. Blood clotting
C. Digestive regulation
D. Hormone synthesis
Correct Answer: C. Digestive regulation
Rationale: Fiber promotes bowel regularity, supports gut
microbiota, and can aid in cholesterol management.
7. Which nutrient deficiency causes scurvy?
A. Vitamin A
B. Vitamin D
C. Vitamin C
D. Niacin
Correct Answer: C. Vitamin C
Rationale: Vitamin C deficiency leads to impaired collagen
synthesis, causing bleeding gums and poor wound healing.
8. What is the main storage form of glucose in the human
body?
A. Glycogen
B. Starch
C. Glucagon
D. Fructose
Correct Answer: A. Glycogen
Rationale: Glycogen is stored in the liver and muscles and can
be broken down into glucose when energy is needed.
9. Which fatty acid is considered essential?
, A. Oleic acid
B. Linoleic acid
C. Palmitic acid
D. Stearic acid
Correct Answer: B. Linoleic acid
Rationale: Essential fatty acids, like linoleic (omega-6) and
alpha-linolenic (omega-3), cannot be synthesized by the body.
10. What is the RDA of protein for a healthy adult?
A. 0.8 g/kg body weight
B. 1.2 g/kg body weight
C. 2.0 g/kg body weight
D. 3.0 g/kg body weight
Correct Answer: A. 0.8 g/kg body weight
Rationale: The Recommended Dietary Allowance for protein in
healthy adults is 0.8 g per kg of body weight per day.
11. Which vitamin is synthesized in the skin upon exposure to
sunlight?
A. Vitamin B12
B. Vitamin D
C. Vitamin K
D. Vitamin E
Correct Answer: B. Vitamin D
Rationale: UVB rays from sunlight trigger the conversion of 7-
dehydrocholesterol to vitamin D3 in the skin.
12. What is the main role of antioxidants in the body?
