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AP Biology flashcards & study guide

Free flashcards, summaries, and study notes for AP Biology — covering all 8 units of the College Board curriculum.

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What's covered

  • Chemistry of life
  • Cell structure & function
  • Cellular energetics
  • Cell communication & cycle
  • Heredity
  • Gene expression & regulation
  • Natural selection
  • Ecology

Study tips that actually work

Master the FRQs early

AP Bio rewards experimental design. Practice writing hypotheses, identifying variables, and graphing data weekly.

Flashcards for vocab, diagrams for processes

Memorize key terms with flashcards, then sketch glycolysis, the Calvin cycle, and meiosis from memory.

Use the CED

The College Board's Course and Exam Description lists every learning objective. Tick them off as you study.

Frequently asked questions

How hard is AP Biology?

It's one of the harder AP sciences — recent pass rates hover around 65%, with about 8% scoring a 5. Strong cellular biology and chemistry foundations help.

How long should I study?

Plan 4–6 weeks of dedicated review, 30–45 minutes a day. Mix flashcards, FRQ practice, and one full timed section per week.

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