PSB-RN Nutrition & Dietary Management 2

Question 1

Which group of vitamins is classified as fat-soluble and requires dietary fat for proper absorption?

Accepted Answer

Vitamins A, D, E, and K

Answer

Vitamins A, D, E, and K are fat-soluble vitamins that require dietary fat and bile salts for absorption from the gastrointestinal tract.

Question 2

A patient diagnosed with phenylketonuria (PKU) must strictly restrict which nutrient from the diet?

Accepted Answer

Phenylalanine (an amino acid)

Answer

PKU is an inborn error of metabolism in which phenylalanine cannot be properly metabolized, requiring severe dietary restriction of phenylalanine to prevent neurological damage.

Question 3

What is enteral nutrition?

Accepted Answer

Nutrition delivered through a tube into the gastrointestinal tract

Answer

Enteral nutrition involves delivering liquid nutrients directly into the gastrointestinal tract via a feeding tube when the patient cannot meet nutritional needs orally.

Question 4

Which mineral is essential for the transport of oxygen within red blood cells?

Accepted Answer

Iron

Answer

Iron is a core component of hemoglobin in red blood cells, where it binds oxygen in the lungs and releases it to tissues throughout the body.

Question 5

What is the caloric value of 1 gram of dietary fat?

Accepted Answer

9 calories

Answer

Fat provides 9 calories per gram, making it the most calorie-dense macronutrient — more than double the caloric value of carbohydrates or protein.

PSB-RN - Registered Nursing Exam Practice Test

PSB-RN - Registered Nursing Exam Practice Test

PSB-RN Nutrition & Dietary Management 2