MCQ Collection
MDCAT 2026 MCQs
Practice MDCAT 2026 questions with answers and explanations.
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Correct Answer: B. Break down food and absorb nutrients
Explanation:
Digestion converts large food molecules into absorbable units.
The small intestine absorbs most nutrients.
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Correct Answer: B. Emulsify fats
Explanation:
Bile salts disperse large fat globules into small droplets.
This increases surface area for lipase.
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Correct Answer: C. Break down food and absorb nutrients
Explanation:
Digestion converts large food molecules into absorbable units.
The small intestine absorbs most nutrients.
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Correct Answer: C. Liver
Explanation:
The liver produces bile continuously.
The gallbladder stores and concentrates it.
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Correct Answer: D. Small intestine
Explanation:
The small intestine has folds, villi, and microvilli.
These structures greatly increase absorptive surface area.
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Correct Answer: D. Liver
Explanation:
The liver produces bile continuously.
The gallbladder stores and concentrates it.
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Correct Answer: A. Small intestine
Explanation:
The small intestine has folds, villi, and microvilli.
These structures greatly increase absorptive surface area.
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Correct Answer: B. Small intestine
Explanation:
The small intestine has folds, villi, and microvilli.
These structures greatly increase absorptive surface area.
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Correct Answer: C. Mechanical mixing and initiation of protein digestion
Explanation:
The stomach churns food and secretes acid and pepsin.
It produces chyme for delivery to the small intestine.
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Correct Answer: D. Maintenance of a relatively stable internal environment
Explanation:
Homeostasis keeps internal variables within suitable ranges.
Feedback systems coordinate sensors, control centers, and effectors.
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Correct Answer: A. Maintenance of a relatively stable internal environment
Explanation:
Homeostasis keeps internal variables within suitable ranges.
Feedback systems coordinate sensors, control centers, and effectors.
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Correct Answer: B. Maintenance of a relatively stable internal environment
Explanation:
Homeostasis keeps internal variables within suitable ranges.
Feedback systems coordinate sensors, control centers, and effectors.
