Certification Practice Exam Questions

Dietetic Technician, Registered (DTR) Certification Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

Covers: Food and Nutrition Sciences • Dietetics Practice • Food Service

Systems • Management of Food and Nutrition Services • Education and Communication

• What is the primary function of carbohydrates in the human body?
• Build muscle tissue
• Regulate body temperature
• Provide energy
• Maintain fluid balance

Rationale: Carbohydrates are the body’s main source of energy, providing

• kcal per gram for daily metabolic functions and physical activity. 1 / 4

• Which nutrient assists in the absorption of calcium?
• Vitamin C
• Vitamin K
• Vitamin D
• Vitamin B12

Rationale: Vitamin D enhances calcium absorption in the intestines,

promoting bone mineralization.

• Which of the following foods is the best source of heme iron?
• Spinach
• Lentils
• Beef liver
• Fortified cereal

Rationale: Heme iron, found in animal products such as liver and meat, is

more readily absorbed than non-heme iron from plant sources.

4. The main storage form of carbohydrates in the human body is:

• Glucose
• Sucrose
• Lactose
• Glycogen 2 / 4

Rationale: Glycogen is stored in the liver and muscles for short-term energy

use.

5. A patient with celiac disease should avoid:

• Corn and rice
• Potatoes and soy
• Wheat, barley, and rye
• Oats and quinoa

Rationale: Gluten, found in wheat, barley, and rye, damages the intestinal

lining in people with celiac disease.

• The best method to preserve the vitamin C content of vegetables during

cooking is:

• Boiling in large amounts of water
• Baking at high temperatures
• Steaming for a short time
• Frying in oil

Rationale: Vitamin C is heat and water sensitive; minimal water and

cooking time preserve nutrients.

• Which of the following lipoproteins carries cholesterol away from

tissues to the liver? 3 / 4

A. LDL

B. VLDL

C. HDL

• Chylomicrons

Rationale: HDL (high-density lipoprotein) removes excess cholesterol from

tissues for excretion.

• Which of the following populations has the highest protein needs per

kilogram of body weight?

• Adults
• Infants
• Adolescents
• Elderly

Rationale: Infants require more protein per kilogram due to rapid growth

and tissue synthesis.

9. The Recommended Dietary Allowance (RDA) is defined as:

• The minimum amount to prevent deficiency
• The average daily intake sufficient for nearly all healthy individuals
• The maximum safe level of nutrient intake
• The amount needed to maintain body weight

Rationale: The RDA covers the nutrient needs of 97–98% of healthy

individuals.

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