AP Biology · Free-response questions 2024

6 questions, each with its course unit and the official scoring guidelines.

Official paper (PDF) · QuestionsAll AP Bio papers→

Question 1

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Question 1 — 1. Crossing over in meiosis I is required for homologous chromosomes to properly align during metaphase and segregate during the first cell division. (a) (i) Describe the function of S phase of interphase. Some regions…

Source: College Board — AP Biology, Free-response questions, 2024

Question 2

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Question 2 — __________________________________________________________ 2. To investigate how increases in environmental temperatures affect the metabolism of certain organisms, researchers incubated liver cells from toads at…

Source: College Board — AP Biology, Free-response questions, 2024

Question 3

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Question 3 — __________________________________________________________ 3. To investigate whether red blood cells of animals lose the ability to take in glucose from their environment as they age, scientists collected red blood…

Source: College Board — AP Biology, Free-response questions, 2024

Question 4

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Question 4 — __________________________________________________________ 4. The common wild oat is native to regions of Europe and Asia but is an invasive species in central California grasslands. In California, the common wild oat…

Source: College Board — AP Biology, Free-response questions, 2024

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