New York Nutrition Specialist Certification
Examination Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2025|2026 Q&A | Instant
Download Pdf
1. Which vitamin is a coenzyme in transamination reactions?
A. Vitamin B1
B. Vitamin B6
C. Vitamin B12
D. Vitamin B2
B. Vitamin B6
Rationale: Pyridoxal phosphate, the active form of vitamin B6, is the
coenzyme in transamination.
2. The main storage form of carbohydrate in humans is:
A. Glucose
B. Galactose
, C. Glycogen
D. Maltose
C. Glycogen
Rationale: Glycogen is the stored polysaccharide form of glucose in
liver and muscle.
3. Which mineral is essential for thyroid hormone synthesis?
A. Selenium
B. Zinc
C. Iodine
D. Iron
C. Iodine
Rationale: Iodine is incorporated into T3 and T4 thyroid hormones.
4. The primary lipoprotein responsible for transporting cholesterol from
tissues to the liver is:
A. VLDL
B. LDL
C. HDL
D. Chylomicrons
C. HDL
Rationale: High-density lipoproteins mediate reverse cholesterol
transport.
5. Which amino acid is a precursor for serotonin?
A. Tyrosine
, B. Phenylalanine
C. Tryptophan
D. Methionine
C. Tryptophan
Rationale: Tryptophan is hydroxylated and decarboxylated to form
serotonin.
6. Which fat-soluble vitamin can be synthesized in the skin?
A. Vitamin A
B. Vitamin D
C. Vitamin E
D. Vitamin K
B. Vitamin D
Rationale: Ultraviolet light converts 7-dehydrocholesterol in skin to
vitamin D3.
7. The main intracellular cation is:
A. Sodium
B. Potassium
C. Calcium
D. Magnesium
B. Potassium
Rationale: Potassium is the primary cation inside cells, maintaining
membrane potential.
, 8. Which hormone lowers blood glucose by increasing cellular uptake?
A. Glucagon
B. Cortisol
C. Epinephrine
D. Insulin
D. Insulin
Rationale: Insulin promotes glucose uptake by muscle and adipose
tissue.
9. Which of the following is a condition of thiamine deficiency?
A. Pellagra
B. Scurvy
C. Beriberi
D. Rickets
C. Beriberi
Rationale: Thiamine deficiency causes beriberi with neurological and
cardiac symptoms.
10. The glycemic index measures:
A. Insulin secretion rate
B. Speed of gastric emptying
C. Effect of carbohydrate on blood glucose
D. Energy density of food
C. Effect of carbohydrate on blood glucose
Examination Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2025|2026 Q&A | Instant
Download Pdf
1. Which vitamin is a coenzyme in transamination reactions?
A. Vitamin B1
B. Vitamin B6
C. Vitamin B12
D. Vitamin B2
B. Vitamin B6
Rationale: Pyridoxal phosphate, the active form of vitamin B6, is the
coenzyme in transamination.
2. The main storage form of carbohydrate in humans is:
A. Glucose
B. Galactose
, C. Glycogen
D. Maltose
C. Glycogen
Rationale: Glycogen is the stored polysaccharide form of glucose in
liver and muscle.
3. Which mineral is essential for thyroid hormone synthesis?
A. Selenium
B. Zinc
C. Iodine
D. Iron
C. Iodine
Rationale: Iodine is incorporated into T3 and T4 thyroid hormones.
4. The primary lipoprotein responsible for transporting cholesterol from
tissues to the liver is:
A. VLDL
B. LDL
C. HDL
D. Chylomicrons
C. HDL
Rationale: High-density lipoproteins mediate reverse cholesterol
transport.
5. Which amino acid is a precursor for serotonin?
A. Tyrosine
, B. Phenylalanine
C. Tryptophan
D. Methionine
C. Tryptophan
Rationale: Tryptophan is hydroxylated and decarboxylated to form
serotonin.
6. Which fat-soluble vitamin can be synthesized in the skin?
A. Vitamin A
B. Vitamin D
C. Vitamin E
D. Vitamin K
B. Vitamin D
Rationale: Ultraviolet light converts 7-dehydrocholesterol in skin to
vitamin D3.
7. The main intracellular cation is:
A. Sodium
B. Potassium
C. Calcium
D. Magnesium
B. Potassium
Rationale: Potassium is the primary cation inside cells, maintaining
membrane potential.
, 8. Which hormone lowers blood glucose by increasing cellular uptake?
A. Glucagon
B. Cortisol
C. Epinephrine
D. Insulin
D. Insulin
Rationale: Insulin promotes glucose uptake by muscle and adipose
tissue.
9. Which of the following is a condition of thiamine deficiency?
A. Pellagra
B. Scurvy
C. Beriberi
D. Rickets
C. Beriberi
Rationale: Thiamine deficiency causes beriberi with neurological and
cardiac symptoms.
10. The glycemic index measures:
A. Insulin secretion rate
B. Speed of gastric emptying
C. Effect of carbohydrate on blood glucose
D. Energy density of food
C. Effect of carbohydrate on blood glucose
