APrep Open the app

AP Biology study notes

Short notes for every topic in AP Biology, unit by unit, each with key terms and a sample AP-style question.

Practice tests that predict your AP score, flashcards and daily review.

Study AP Biology free in APrep

Unit 1: Chemistry of Life

Unit 2: Cell Structure & Function

Unit 3: Cellular Energetics

Unit 4: Cell Communication & Cell Cycle

Unit 5: Heredity

Unit 6: Gene Expression & Regulation

Unit 7: Natural Selection

Unit 8: Ecology