MCAT Question Bank
Try sample BoardQBank-style questions with immediate feedback and concise explanations.
Question 1 — Biochemistry
An enzyme follows Michaelis–Menten kinetics. A competitive inhibitor is added while the substrate concentration is gradually increased. Which change is expected?
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A competitive inhibitor competes with substrate for the active site. Its effect can be overcome by sufficiently increasing substrate concentration, so Vmax remains unchanged. More substrate is required to reach half-maximal velocity, so the apparent Km increases.
Question 2 — CARS
An author argues that public museums should focus less on displaying rare objects and more on helping visitors understand how historical narratives are constructed. Which statement best captures the central claim?
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The author contrasts object display with helping visitors understand how narratives are formed. Choice C preserves that contrast without making the stronger claims found in the other options.
Question 3 — Psychology/Sociology
A student studies in the same room where an examination will be administered and later recalls the material more easily. Which concept best explains this effect?
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Recall improves when the environmental context at retrieval matches the context present during encoding. This is context-dependent memory.