Test your knowledge with real exam-style questions. Answers and rationales included.
Question 1 of 5
A nurse needs to administer 0.5mg of medication. Available concentration is 0.25mg/mL. How many mL should be given?
📚 Rationale: Use the formula: Desired/Have × Volume = 0.5mg ÷ 0.25mg/mL = 2 mL. Always double-check your calculation using dimensional analysis.
Score: 0/0
Question 2 of 5
Which of the following is NOT a function of the lymphatic system?
📚 Rationale: Red blood cells are produced in the red bone marrow, not the lymphatic system. The lymphatic system returns fluid, fights infection via lymphocytes, and absorbs fats through lacteals in the small intestine.
Score: 0/0
Question 3 of 5
A solution contains 20% NaCl. How many grams of NaCl are in 500mL of this solution?
📚 Rationale: 20% means 20g per 100mL. For 500mL: 20g × (500/100) = 100 grams. Percent solutions are always expressed as grams per 100mL.
Score: 0/0
Question 4 of 5
Which organelle is responsible for producing ATP through cellular respiration?
📚 Rationale: The mitochondria is the powerhouse of the cell — it produces ATP through cellular respiration. The nucleus contains DNA, ribosomes make proteins, and the Golgi apparatus packages and ships proteins.
Score: 0/0
Question 5 of 5
A patient weighs 176 pounds. What is their weight in kilograms?
📚 Rationale: To convert pounds to kg, divide by 2.2. 176 ÷ 2.2 = 80 kg. This conversion is essential for medication dosing in nursing.