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AP Biology

The four big ideas of the course, built around the free-response questions that decide the score. Placeholder content.

10 lessons · about 3.3 hours · Preparing for the AP Biology examination

The syllabus, mapped

  1. 01Cell structure and transport — Unit 1 and 2, and the basis of the rest.
  2. 02Cellular energetics — Respiration and photosynthesis, examined together.
  3. 03Heredity and gene expression — The largest share of the exam.
  4. 04Natural selection — Every free-response question can touch it.
  5. 05Ecology — The last unit and the least revised.

The 10 lessons

  1. 01Cell structure and transport: the ideas · free
  2. 02Cell structure and transport: exam problems
  3. 03Cellular energetics: the ideas
  4. 04Cellular energetics: exam problems
  5. 05Heredity and gene expression: the ideas
  6. 06Heredity and gene expression: exam problems
  7. 07Natural selection: the ideas
  8. 08Natural selection: exam problems
  9. 09Ecology: the ideas
  10. 10Ecology: exam problems

The first lesson is free. The other 9 (3.3 hours in all) cost $8.42 bought together.

Or $1.70 a lesson one at a time, or $20.00 a month for Minimal — cheaper once you take more than ~11 lessons a month.

Try a block from the first lesson: Cell structure and transport: the ideas
Labelled diagram · circulationSIX STAGES
Body tissuesRARVLungsLALV

Blue is blood that has given up its oxygen, red is blood that has just collected some. Click any stage to read what happens there.

Click a stage on the diagram.

Which organelle is the main site of ATP production in a eukaryotic cell?

Pick an option.

Free account. The course comes with you; nothing is charged for the first lesson.

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