AP Biology has a lot of vocabulary, and the exam assumes you have it. You can't analyze an experiment on membrane transport if you're still unsure what a hypertonic solution does to a cell. Flashcards are a fast way to get that vocabulary solid so your study time can go to the harder part: reasoning with data.
This guide gives you a free deck, an honest map of how much of AP Bio it covers, and a plan for the rest.
The deck: Biology Essentials: Cell & Molecular is free to download as .apkg (for MintDeck or Anki) or .csv. It has 150 cards. It's a general biology deck written for GCSE, A-level and intro college courses as well as AP, so read the coverage table below before you rely on it.
What the AP Biology exam looks like
The College Board describes the exam this way:
- Section I: 60 multiple-choice questions in 90 minutes, 50% of the score. Some are stand-alone; others come in sets built around a shared diagram, graph or data table.
- Section II: 6 free-response questions in 90 minutes, 50% of the score. Two long questions focus on interpreting experimental results (one includes graphing), and four short questions cover investigation design, conceptual analysis, models and data analysis.
- It's a hybrid digital exam. You read the questions in the Bluebook app, but you handwrite free-response answers in a paper booklet.
- Calculators are allowed on both sections (four-function, scientific or graphing).
Confirm current details for your exam year on AP Students.
What this means for flashcards: they help directly with the content knowledge in multiple-choice questions and give you the vocabulary for free response. They don't teach you to design an experiment or read a graph. For that, work through released free-response questions on AP Central and check your answers against the scoring guidelines.
How much of AP Bio the free deck covers
The deck has six topics: Cell Structure & Organelles (28 cards), Biological Molecules & Enzymes (26), Membranes & Transport (22), Cell Division & the Cell Cycle (24), DNA, RNA & Protein Synthesis (26), and Genetics, Inheritance & Evolution (24). Here's how that lines up with the eight AP units and the College Board's exam weightings:
| AP Biology unit | Exam weighting | Free deck coverage |
|---|---|---|
| 1. Chemistry of Life | 8–11% | Good on macromolecules, monomers and polymers, condensation and hydrolysis, protein structure |
| 2. Cells | 10–13% | Strong: organelles, endosymbiosis, membranes, diffusion, osmosis, water potential, tonicity |
| 3. Cellular Energetics | 12–16% | Partial: enzymes, active sites, temperature and pH effects, inhibitors. Photosynthesis and respiration pathways are not covered |
| 4. Cell Communication and Cell Cycle | 10–15% | Partial: cell cycle and mitosis are covered; cell signaling and feedback are not |
| 5. Heredity | 8–11% | Strong: meiosis, crossing over, independent assortment, Punnett squares, sex linkage, pedigrees |
| 6. Gene Expression and Regulation | 12–16% | Partial: replication, transcription, translation, the genetic code, mutations. Gene regulation is not covered |
| 7. Natural Selection | 13–20% | Light: natural selection, adaptation, speciation, antibiotic resistance. No Hardy-Weinberg or phylogenetics |
| 8. Ecology | 10–15% | Not covered |
So the deck is a strong base for roughly the first half of the course and the genetics core, and a starting point at best for energetics, evolution and ecology. Unit 7 carries the largest weighting and Unit 8 isn't covered at all, so you'll need to build those cards yourself.
How to fill the gaps
Make cards from your own notes for Units 3, 7 and 8. These are the gaps that matter most. Your class notes or review book chapters are the best source because they match what your teacher emphasized. In MintDeck you can type them, import a CSV, or have AI draft cards from pasted notes or a PDF of your notes and edit them before studying.
Make cards for processes, not just terms. "Where does the Calvin cycle happen?" is a fine card. So is "what happens to the rate of photosynthesis if CO₂ drops, and why?" Process cards prepare you for the reasoning questions better than definitions alone.
Make a card from every missed question. After each practice set, write one card for each fact you got wrong. Over a semester, this becomes the most valuable deck you own.
Use image occlusion for diagrams. Cell diagrams, the phases of mitosis and membrane structures are easier to learn when you hide labels on the picture itself. MintDeck's in-app image occlusion is free.
Where to study: comparing flashcard apps
| MintDeck | Anki | Quizlet | |
|---|---|---|---|
| Scheduler | FSRS (on by default) | FSRS (optional) or SM-2 | Proprietary |
| Can import this deck | Yes (.apkg or .csv) | Yes (.apkg) | Paste-in text import |
| Shared AP Bio content | Free general biology deck | Community decks | Many user-made sets |
| AI cards from your notes | Yes (credits) | Not built in | Yes (plan limits vary) |
| Labeled-diagram study | Free in-app image occlusion | Built-in image occlusion | Diagram sets |
| iPhone price | Free (credits only for AI) | AnkiMobile $24.99 | Free tier; paid plan |
| Platforms | iOS | Desktop, Android, iOS, web | Web, iOS, Android |
Quizlet has a huge library of AP Bio sets made by other students and teachers, which is handy for quick reviews; the quality varies and several study modes need a paid plan. Knowt is another popular free option for turning notes into flashcards; check which platforms it currently supports. Anki is free on desktop and Android and very flexible, but takes time to set up, and AnkiMobile costs $24.99 on iPhone.
MintDeck is a free iPhone and iPad app with FSRS on by default. Reviews, imports, manual cards, image occlusion, reverse cards, quizzes, folders, iCloud sync and Audio Study are free. Credits are only for optional AI generation. It's iOS-only.
How to set up MintDeck for AP Biology
- Download MintDeck from the App Store. It's free.
- Get the deck. Open the Biology Essentials deck page on your iPhone and tap Download .apkg.
- Import it. In MintDeck, go to Decks → + → Import → Anki Deck and select the file. Put it in an "AP Bio" folder so your own unit decks sit next to it.
- Match the deck to your class. Study the topics your class is on now. If you're starting in the fall, cells and molecules line up with the first units.
- Build decks for the missing units. Create one deck each for Cellular Energetics, Natural Selection and Ecology from your notes. AI topic generation costs about 1 credit per card, and a PDF or image job costs 10–30 credits. New accounts get 10 free credits; the only paid option is a one-time pack of 400 credits for $4.99. Check every AI card against your textbook.
- Review a little every day. 10–15 new cards a day plus reviews is enough to stay ahead of a school-year course. FSRS handles the timing.
- Practice free response weekly. Flashcards hold the facts; released free-response questions train the writing.
If your class already shares Quizlet sets, the Quizlet import guide shows how to bring them in.
The bottom line
The free Biology Essentials deck is a good base for AP Bio's cell, molecular and genetics content, which covers a large part of the course. It isn't a complete AP deck: energetics pathways, cell signaling, evolution in depth and all of ecology are up to you. Use it for the foundation, make cards from your own notes and missed questions for the rest, and spend real time on free-response practice.
Related guides: SAT prep · How to make flashcards with AI · PDF to flashcards · Study techniques · Spaced repetition science · GCSE chemistry flashcards
Free study decks: Biology Essentials: Cell & Molecular · Chemistry: GCSE & A-Level Core · SAT Math Formulas
Frequently asked questions
- Are flashcards good for AP Biology?
- Yes, for the vocabulary and processes the exam assumes you know: organelles, macromolecules, membrane transport, the cell cycle, gene expression and inheritance. They are not enough on their own. Half of the AP Biology exam score comes from free-response questions on experimental design and data analysis, which you build by practicing released free-response questions.
- Is there a free AP Biology flashcard deck?
- MintDeck's free Biology Essentials: Cell & Molecular deck has 150 cards on cell structure, biological molecules and enzymes, membranes and transport, cell division, DNA and protein synthesis, and genetics. It is a general biology deck, not an AP-specific one. It covers a solid share of AP Units 1, 2, 4, 5 and 6, touches Units 3 and 7, and does not cover Unit 8 (Ecology).
- What is the format of the AP Biology exam?
- According to the College Board, the AP Biology exam is about 3 hours: 60 multiple-choice questions in 90 minutes and 6 free-response questions (2 long, 4 short) in 90 minutes, each section worth 50% of the score. It is a hybrid digital exam: you read questions in the Bluebook app and handwrite free-response answers in a paper booklet. Check apstudents.collegeboard.org for current details.
- Which AP Biology unit is weighted most heavily?
- The College Board lists Unit 7, Natural Selection, at 13–20% of the exam, the widest and highest range. Units 3 (Cellular Energetics) and 6 (Gene Expression and Regulation) are 12–16% each.
Written by
Sergiu Puscas · Creator of MintDeck
Sergiu builds MintDeck and writes every guide and comparison on this blog — drawing on building an FSRS-based flashcard app and hands-on testing of the study apps covered here.
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