NASM Certified Nutrition Coach (CNC)
Exam 1 With Actual Questions &
Verified Answers ,Plus Explained
Rationales/Expert Verified For
Guaranteed Pass 2026/Latest
Update/Instant Download Pdf
1. Which macronutrient provides the highest number of calories
per gram?
A. Carbohydrates
B. Protein
C. Fat
D. Alcohol
C. Fat
Rationale: Fat provides 9 calories per gram, whereas carbohydrates
and protein provide 4 calories per gram and alcohol provides 7
calories per gram.
2. What is the primary role of protein in the body?
A. Immediate energy source
B. Structural support and tissue repair
C. Hormone regulation only
D. Fat storage
,B. Structural support and tissue repair
Rationale: Proteins are essential for building and repairing tissues,
making enzymes, and supporting immune function.
3. Which type of carbohydrate is digested and absorbed most
quickly?
A. Fiber
B. Starch
C. Simple sugars
D. Resistant starch
C. Simple sugars
Rationale: Simple sugars like glucose and sucrose are rapidly
digested and absorbed, leading to quick energy availability.
4. Which vitamin is fat-soluble?
A. Vitamin B12
B. Vitamin C
C. Vitamin D
D. Vitamin B6
C. Vitamin D
Rationale: Vitamins A, D, E, and K are fat-soluble, meaning they
require dietary fat for absorption and can be stored in the liver.
5. What is the main function of dietary fiber?
A. Provide calories
B. Promote satiety and digestive health
C. Build muscle
D. Regulate hormones
B. Promote satiety and digestive health
Rationale: Fiber slows digestion, promotes fullness, and supports
healthy bowel movements.
, 6. How many essential amino acids are required in the human
diet?
A. 5
B. 8
C. 9
D. 12
C. 9
Rationale: The human body cannot synthesize nine essential amino
acids, so they must be obtained from the diet.
7. Which mineral is critical for oxygen transport in the blood?
A. Calcium
B. Magnesium
C. Iron
D. Sodium
C. Iron
Rationale: Iron is a key component of hemoglobin, which carries
oxygen from the lungs to tissues.
8. What is the recommended daily water intake for most adults?
A. 500–1000 mL
B. 1–1.5 L
C. 2–3 L
D. 4–5 L
C. 2–3 L
Rationale: Adequate hydration is essential for physiological
processes, and most adults require approximately 2–3 liters of
water daily.
9. Which hormone is primarily responsible for regulating blood
sugar levels?
, A. Cortisol
B. Insulin
C. Glucagon
D. Thyroxine
B. Insulin
Rationale: Insulin lowers blood glucose by facilitating its uptake
into cells for energy or storage.
10. Which of the following is considered a complete protein?
A. Rice
B. Beans
C. Quinoa
D. Corn
C. Quinoa
Rationale: Complete proteins contain all nine essential amino acids,
and quinoa is a plant-based complete protein.
11. The thermic effect of food refers to:
A. Calories burned during exercise
B. Calories burned during digestion
C. Calories stored as fat
D. Calories excreted in urine
B. Calories burned during digestion
Rationale: The thermic effect of food is the energy required to
digest, absorb, and metabolize nutrients.
12. Which fatty acid is considered essential?
A. Oleic acid
B. Linoleic acid
C. Stearic acid
D. Palmitic acid
Exam 1 With Actual Questions &
Verified Answers ,Plus Explained
Rationales/Expert Verified For
Guaranteed Pass 2026/Latest
Update/Instant Download Pdf
1. Which macronutrient provides the highest number of calories
per gram?
A. Carbohydrates
B. Protein
C. Fat
D. Alcohol
C. Fat
Rationale: Fat provides 9 calories per gram, whereas carbohydrates
and protein provide 4 calories per gram and alcohol provides 7
calories per gram.
2. What is the primary role of protein in the body?
A. Immediate energy source
B. Structural support and tissue repair
C. Hormone regulation only
D. Fat storage
,B. Structural support and tissue repair
Rationale: Proteins are essential for building and repairing tissues,
making enzymes, and supporting immune function.
3. Which type of carbohydrate is digested and absorbed most
quickly?
A. Fiber
B. Starch
C. Simple sugars
D. Resistant starch
C. Simple sugars
Rationale: Simple sugars like glucose and sucrose are rapidly
digested and absorbed, leading to quick energy availability.
4. Which vitamin is fat-soluble?
A. Vitamin B12
B. Vitamin C
C. Vitamin D
D. Vitamin B6
C. Vitamin D
Rationale: Vitamins A, D, E, and K are fat-soluble, meaning they
require dietary fat for absorption and can be stored in the liver.
5. What is the main function of dietary fiber?
A. Provide calories
B. Promote satiety and digestive health
C. Build muscle
D. Regulate hormones
B. Promote satiety and digestive health
Rationale: Fiber slows digestion, promotes fullness, and supports
healthy bowel movements.
, 6. How many essential amino acids are required in the human
diet?
A. 5
B. 8
C. 9
D. 12
C. 9
Rationale: The human body cannot synthesize nine essential amino
acids, so they must be obtained from the diet.
7. Which mineral is critical for oxygen transport in the blood?
A. Calcium
B. Magnesium
C. Iron
D. Sodium
C. Iron
Rationale: Iron is a key component of hemoglobin, which carries
oxygen from the lungs to tissues.
8. What is the recommended daily water intake for most adults?
A. 500–1000 mL
B. 1–1.5 L
C. 2–3 L
D. 4–5 L
C. 2–3 L
Rationale: Adequate hydration is essential for physiological
processes, and most adults require approximately 2–3 liters of
water daily.
9. Which hormone is primarily responsible for regulating blood
sugar levels?
, A. Cortisol
B. Insulin
C. Glucagon
D. Thyroxine
B. Insulin
Rationale: Insulin lowers blood glucose by facilitating its uptake
into cells for energy or storage.
10. Which of the following is considered a complete protein?
A. Rice
B. Beans
C. Quinoa
D. Corn
C. Quinoa
Rationale: Complete proteins contain all nine essential amino acids,
and quinoa is a plant-based complete protein.
11. The thermic effect of food refers to:
A. Calories burned during exercise
B. Calories burned during digestion
C. Calories stored as fat
D. Calories excreted in urine
B. Calories burned during digestion
Rationale: The thermic effect of food is the energy required to
digest, absorb, and metabolize nutrients.
12. Which fatty acid is considered essential?
A. Oleic acid
B. Linoleic acid
C. Stearic acid
D. Palmitic acid
