MCQ Collection
MDCAT Biology MCQs
Practice MDCAT Biology questions with answers and explanations.
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Correct Answer: C. A structural polysaccharide in plant cell walls
Explanation:
Cellulose consists of beta-glucose units.
Humans lack enzymes to digest its beta linkages.
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Correct Answer: D. A structural polysaccharide in plant cell walls
Explanation:
Cellulose consists of beta-glucose units.
Humans lack enzymes to digest its beta linkages.
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Correct Answer: A. A structural polysaccharide in plant cell walls
Explanation:
Cellulose consists of beta-glucose units.
Humans lack enzymes to digest its beta linkages.
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Correct Answer: B. Long-term energy storage, membranes, and signaling
Explanation:
Lipids include fats, phospholipids, steroids, and waxes.
They are hydrophobic or amphipathic.
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Correct Answer: C. Long-term energy storage, membranes, and signaling
Explanation:
Lipids include fats, phospholipids, steroids, and waxes.
They are hydrophobic or amphipathic.
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Correct Answer: D. Long-term energy storage, membranes, and signaling
Explanation:
Lipids include fats, phospholipids, steroids, and waxes.
They are hydrophobic or amphipathic.
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Correct Answer: A. Glycerol joined to three fatty acids
Explanation:
Triglycerides are major energy-storage lipids.
They form through ester bonds.
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Correct Answer: A. A glucose-storage polysaccharide in animals
Explanation:
Glycogen is stored mainly in liver and muscle.
It can be broken down to release glucose.
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Correct Answer: B. A glucose-storage polysaccharide in animals
Explanation:
Glycogen is stored mainly in liver and muscle.
It can be broken down to release glucose.
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Correct Answer: A. Breaking a bond by adding water
Explanation:
Hydrolysis separates polymers into smaller units.
Water contributes H and OH to the products.
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Correct Answer: B. Breaking a bond by adding water
Explanation:
Hydrolysis separates polymers into smaller units.
Water contributes H and OH to the products.
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Correct Answer: C. Breaking a bond by adding water
Explanation:
Hydrolysis separates polymers into smaller units.
Water contributes H and OH to the products.
