PAX PAX (RN) 3 — Questions and Answers
Question 1: What percentage of 80 is 20?
- 15%
- 20%
- 25% (Correct answer)
- 40%
Correct answer: 25%
20 ÷ 80 = 0.25, which equals 25%.
Question 2: Which of the following is the primary function of red blood cells?
- Fight infection
- Transport oxygen (Correct answer)
- Initiate blood clotting
- Produce antibodies
Correct answer: Transport oxygen
Red blood cells contain hemoglobin, which binds to oxygen and transports it from the lungs to body tissues.
Question 3: Choose the word that best completes the analogy: Stethoscope : Auscultation :: Sphygmomanometer : ___
- Temperature
- Blood pressure (Correct answer)
- Oxygen saturation
- Pulse rate
Correct answer: Blood pressure
A stethoscope is used for auscultation; a sphygmomanometer is used to measure blood pressure.
Question 4: A train travels 240 miles in 4 hours. What is its average speed in miles per hour?
- 40 mph
- 50 mph
- 60 mph (Correct answer)
- 80 mph
Correct answer: 60 mph
Speed = distance ÷ time = 240 miles ÷ 4 hours = 60 mph.
Question 5: In the pH scale, a solution with a pH of 3 is best described as:
- Strongly basic
- Weakly basic
- Neutral
- Acidic (Correct answer)
Correct answer: Acidic
The pH scale runs from 0–14; values below 7 are acidic, 7 is neutral, and above 7 is basic, so pH 3 is acidic.
Question 6: Which of the following correctly identifies the dependent clause in this sentence: 'Although she studied hard, she failed the exam.'
- she failed the exam
- Although she studied hard (Correct answer)
- she studied hard
- Although she
Correct answer: Although she studied hard
A dependent clause begins with a subordinating conjunction and cannot stand alone; 'Although she studied hard' begins with 'although' and is dependent.
Question 7: Which chamber of the heart pumps oxygenated blood to the systemic circulation?
- Right atrium
- Right ventricle
- Left atrium
- Left ventricle (Correct answer)
Correct answer: Left ventricle
The left ventricle pumps oxygen-rich blood through the aorta to the rest of the body.
PAX PAX (RN) 3
What percentage of 80 is 20?