Texas Dietitian Licensing (CDR RD Exam)
With Actual Questions & Verified Answers,
Plus Explained Rationales/Expert Verified
For Guaranteed 100% Pass 2026/Latest
Update/Instant Download Pdf
1. Which nutrient is the primary source of energy for the brain?
A. Protein
B. Fat
C. Carbohydrate
D. Water
Carbohydrates are the main source of glucose, which is the
preferred energy source for the brain.
2. A patient with chronic kidney disease is at risk for which
electrolyte imbalance?
A. Hypokalemia
B. Hyperkalemia
C. Hypernatremia
D. Hypocalcemia
CKD reduces kidney excretion of potassium, increasing the risk
for hyperkalemia.
3. Which vitamin deficiency is associated with night blindness?
A. Vitamin C
B. Vitamin A
C. Vitamin D
D. Vitamin K
, Vitamin A is essential for the synthesis of rhodopsin in the retina;
deficiency can cause night blindness.
4. The primary function of LDL cholesterol is to:
A. Remove cholesterol from tissues
B. Transport cholesterol to tissues
C. Convert cholesterol to bile acids
D. Promote triglyceride storage
LDL carries cholesterol from the liver to peripheral tissues, which
can contribute to plaque formation.
5. Which dietary intervention is most effective for reducing
hypertension?
A. High-protein diet
B. Low-carbohydrate diet
C. DASH diet
D. Ketogenic diet
The DASH diet (Dietary Approaches to Stop Hypertension)
emphasizes fruits, vegetables, low-fat dairy, and reduced
sodium, lowering blood pressure.
6. Which amino acid is considered essential?
A. Glutamine
B. Leucine
C. Tyrosine
D. Alanine
Leucine cannot be synthesized by the body and must be obtained
from the diet.
7. A patient with celiac disease should avoid:
A. Lactose
B. Gluten
C. Soy
, D. Corn
Gluten, found in wheat, barley, and rye, triggers an autoimmune
response in celiac disease.
8. Which lab value is most indicative of long-term glycemic control?
A. Fasting glucose
B. Random glucose
C. Hemoglobin A1c
D. C-peptide
Hemoglobin A1c reflects average blood glucose over the past 2–
3 months.
9. The basal metabolic rate is primarily influenced by:
A. Physical activity
B. Lean body mass
C. Fat intake
D. Hydration status
Lean body mass is metabolically active tissue that largely
determines BMR.
10. Which nutrient is important for collagen synthesis?
A. Vitamin D
B. Vitamin C
C. Vitamin E
D. Calcium
Vitamin C acts as a cofactor for proline and lysine hydroxylation
during collagen synthesis.
11. A patient with iron deficiency anemia would benefit most
from which dietary source?
A. Spinach
B. Lean red meat
C. Milk
With Actual Questions & Verified Answers,
Plus Explained Rationales/Expert Verified
For Guaranteed 100% Pass 2026/Latest
Update/Instant Download Pdf
1. Which nutrient is the primary source of energy for the brain?
A. Protein
B. Fat
C. Carbohydrate
D. Water
Carbohydrates are the main source of glucose, which is the
preferred energy source for the brain.
2. A patient with chronic kidney disease is at risk for which
electrolyte imbalance?
A. Hypokalemia
B. Hyperkalemia
C. Hypernatremia
D. Hypocalcemia
CKD reduces kidney excretion of potassium, increasing the risk
for hyperkalemia.
3. Which vitamin deficiency is associated with night blindness?
A. Vitamin C
B. Vitamin A
C. Vitamin D
D. Vitamin K
, Vitamin A is essential for the synthesis of rhodopsin in the retina;
deficiency can cause night blindness.
4. The primary function of LDL cholesterol is to:
A. Remove cholesterol from tissues
B. Transport cholesterol to tissues
C. Convert cholesterol to bile acids
D. Promote triglyceride storage
LDL carries cholesterol from the liver to peripheral tissues, which
can contribute to plaque formation.
5. Which dietary intervention is most effective for reducing
hypertension?
A. High-protein diet
B. Low-carbohydrate diet
C. DASH diet
D. Ketogenic diet
The DASH diet (Dietary Approaches to Stop Hypertension)
emphasizes fruits, vegetables, low-fat dairy, and reduced
sodium, lowering blood pressure.
6. Which amino acid is considered essential?
A. Glutamine
B. Leucine
C. Tyrosine
D. Alanine
Leucine cannot be synthesized by the body and must be obtained
from the diet.
7. A patient with celiac disease should avoid:
A. Lactose
B. Gluten
C. Soy
, D. Corn
Gluten, found in wheat, barley, and rye, triggers an autoimmune
response in celiac disease.
8. Which lab value is most indicative of long-term glycemic control?
A. Fasting glucose
B. Random glucose
C. Hemoglobin A1c
D. C-peptide
Hemoglobin A1c reflects average blood glucose over the past 2–
3 months.
9. The basal metabolic rate is primarily influenced by:
A. Physical activity
B. Lean body mass
C. Fat intake
D. Hydration status
Lean body mass is metabolically active tissue that largely
determines BMR.
10. Which nutrient is important for collagen synthesis?
A. Vitamin D
B. Vitamin C
C. Vitamin E
D. Calcium
Vitamin C acts as a cofactor for proline and lysine hydroxylation
during collagen synthesis.
11. A patient with iron deficiency anemia would benefit most
from which dietary source?
A. Spinach
B. Lean red meat
C. Milk
