Practice MDCAT 2026 questions with answers and explanations.
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The respiratory system brings air to gas-exchange surfaces.
Oxygen enters blood and carbon dioxide leaves.
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Each group contains three consecutive letters.
Every new group begins one letter later.
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The respiratory system brings air to gas-exchange surfaces.
Oxygen enters blood and carbon dioxide leaves.
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The first letter moves backward and the second moves forward.
After W-D comes V-E.
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The respiratory system brings air to gas-exchange surfaces.
Oxygen enters blood and carbon dioxide leaves.
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Letters and numbers both increase by two.
After G7, the next term is I9.
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Alveoli have thin walls and rich capillary networks.
Their large surface area supports rapid diffusion.
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Letters advance by three while numbers increase by two.
After K8 comes N10.
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Alveoli have thin walls and rich capillary networks.
Their large surface area supports rapid diffusion.
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A 180° turn points in the exact opposite direction.
The opposite of south-west is north-east.
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Alveoli have thin walls and rich capillary networks.
Their large surface area supports rapid diffusion.
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The east-west and north-south movements cancel.
The child returns to the starting position.
