AP Biology · Free-response questions 2021

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

Official paper (PDF) · QuestionsAll AP Bio papers→

Question 2

Open answer
Question 2 — 2. Geneticists investigated the mode of inheritance of a rare disorder that alters glucose metabolism and first shows symptoms in adulthood. The geneticists studied a family in which some individuals of generations 2…

Source: College Board — AP Biology, Free-response questions, 2021

Question 3

Open answer
Question 3 — __________________________________________________________ 3. Researchers hypothesize that the plant compound resveratrol improves mitochondrial function. To test this hypothesis, researchers dissolve resveratrol in…

Source: College Board — AP Biology, Free-response questions, 2021

Question 4

Open answer
Question 4 — __________________________________________________________ 4. In 1981 a single immature male Geospiza conirostris finch flew more than 100 kilometers from the Galápagos island of Española to the Galápagos island of…

Source: College Board — AP Biology, Free-response questions, 2021

Question 5

Open answer
Question 5 — 5. Annual plants complete their life cycle, including germination, seed production, and death, within one year. Ambrosia trifida (giant ragweed) is an annual plant that readily colonizes any land that has had a…

Source: College Board — AP Biology, Free-response questions, 2021

Stuck on an exercise?

Our tutors clear up your doubts one to one — online, or in person with a local tutor.

Ask a tutorLessons in AP Bio→