MCQ Collection
MDCAT Biology MCQs
Practice MDCAT Biology questions with answers and explanations.
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Correct Answer: D. Pressure wave produced by heart contractions in arteries
Explanation:
Each ventricular contraction creates an arterial pressure wave.
Pulse rate usually reflects heart rate.
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Correct Answer: D. Nephron
Explanation:
Nephrons filter blood and modify filtrate.
Each includes a renal corpuscle and tubule.
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Correct Answer: A. Pressure wave produced by heart contractions in arteries
Explanation:
Each ventricular contraction creates an arterial pressure wave.
Pulse rate usually reflects heart rate.
Choose an option to check your answer.
Correct Answer: A. Nephron
Explanation:
Nephrons filter blood and modify filtrate.
Each includes a renal corpuscle and tubule.
Choose an option to check your answer.
Correct Answer: B. Pressure wave produced by heart contractions in arteries
Explanation:
Each ventricular contraction creates an arterial pressure wave.
Pulse rate usually reflects heart rate.
Choose an option to check your answer.
Correct Answer: B. Movement of water and small solutes from blood into Bowman's capsule
Explanation:
Blood pressure drives filtration across the glomerular barrier.
Cells and most large proteins remain in blood.
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Correct Answer: C. Defend against infection and abnormal cells
Explanation:
White blood cells participate in innate and adaptive immunity.
Different types perform specialized defense roles.
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Correct Answer: A. Transport oxygen
Explanation:
Hemoglobin binds oxygen in red blood cells.
It also contributes to carbon-dioxide transport and buffering.
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Correct Answer: B. Carry respiratory gases
Explanation:
Red blood cells contain hemoglobin.
Their biconcave shape supports gas exchange.
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Correct Answer: C. Carry respiratory gases
Explanation:
Red blood cells contain hemoglobin.
Their biconcave shape supports gas exchange.
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Correct Answer: D. Carry respiratory gases
Explanation:
Red blood cells contain hemoglobin.
Their biconcave shape supports gas exchange.
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Correct Answer: A. Defend against infection and abnormal cells
Explanation:
White blood cells participate in innate and adaptive immunity.
Different types perform specialized defense roles.