Everything worth bookmarking
Members-only study tools first, then a free curated library of 39 links for AP and IB Biology — official syllabus material, course notes, video channels, simulations, research databases and study technique.
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Practice Papers
MembersInteractive AP and IB papers marked instantly with worked explanations, plus full PDF papers with solutions. Higher tiers unlock more papers.
Open practice papers →Past Papers
MembersReal past exam papers with the mark scheme and worked solutions. Sit them to time, then mark yourself against the examiner.
Open past papers →Video Lessons
GoldA recorded lesson for every topic, inside the course it belongs to — watch it next to the notes and the practice questions.
Open video lessons →Master Classes
PlatinumLonger, exam-focused sessions for Platinum members — full topic walkthroughs, past-paper dissections and exam technique.
Open master classes →Free library
Open to everyone — no account needed.
39 resources
Official & Syllabus 5
AP Biology — Course and Exam Description
The official College Board CED: every unit, learning objective and science practice you are assessed on.
apstudents.collegeboard.orgAP Biology — Past Exam Questions
Free-response questions from previous years with official scoring guidelines and sample responses.
apcentral.collegeboard.orgAP Classroom
College Board progress checks and the personal progress dashboard. Your school provides the join code.
apclassroom.collegeboard.orgIB Biology — Official Subject Page
The IB overview of the Biology course, assessment structure and subject briefs for SL and HL.
ibo.orgIB Diploma — Assessment Overview
How the Diploma is graded, including internal assessment weighting and the core requirements.
ibo.orgCourses & Notes 7
Khan Academy — AP Biology
Free full course: videos, articles and practice questions mapped to the AP units.
khanacademy.orgKhan Academy — Biology Library
Broader biology library, useful for filling gaps below AP or IB level.
khanacademy.orgBozeman Science — AP Biology
Paul Andersen's complete AP Biology series, organised by the College Board units.
bozemanscience.comBioNinja — IB Biology
Syllabus-point-by-syllabus-point notes for IB Biology SL and HL. The most complete IB reference online.
bioninja.com.auBioKnowledgy
Andrew Allott-aligned IB Biology presentations and question banks by statement.
bioknowledgy.infoSave My Exams — IB Biology
Revision notes, topic questions and mark schemes organised by IB syllabus topic.
savemyexams.comAmoeba Sisters
Short, genuinely clear explainer videos and handouts. Excellent for first exposure to a topic.
amoebasisters.comVideo Channels 5
Amoeba Sisters — YouTube Channel
Animated biology explainers, roughly 5-10 minutes each, with free companion handouts.
youtube.comBozeman Science — YouTube Channel
Paul Andersen's full AP Biology video series plus lab and statistics walkthroughs.
youtube.comCrashCourse Biology
Fast-paced overviews. Good for revision once you already understand the mechanism.
youtube.comiBiology
Research talks by working biologists. Strong background reading for Extended Essays.
ibiology.orgNucleus Medical Media
High-quality medical and physiological animations — circulation, gas exchange, immunity.
youtube.comSimulations & Interactives 5
HHMI BioInteractive
Outstanding free interactives, data-analysis activities and short films. Ideal for IA inspiration.
biointeractive.orgPhET — Biology Simulations
University of Colorado simulations for gene expression, natural selection and neurons.
phet.colorado.eduLearn.Genetics — University of Utah
Genetics, epigenetics and cell biology explained interactively. Very strong on inheritance.
learn.genetics.utah.eduCells Alive
Interactive cell models, mitosis and meiosis animations, and cell-cycle diagrams.
cellsalive.comBioMan Biology — Games and Reviews
Revision games and virtual labs. Light, but effective for drilling terminology.
biomanbio.comDatabases & Tools 6
NCBI
The US National Center for Biotechnology Information — gateway to genomic and literature databases.
ncbi.nlm.nih.govPubMed
Search the biomedical literature. Use it to find primary sources for your IA or Extended Essay.
pubmed.ncbi.nlm.nih.govBLAST — Sequence Alignment
Compare DNA or protein sequences against the databases. Directly assessed in AP Biology.
blast.ncbi.nlm.nih.govRCSB Protein Data Bank
Three-dimensional structures of proteins and nucleic acids, with a molecule of the month feature.
rcsb.orgUniProt
Curated protein sequence and function database — useful for enzyme and membrane-protein work.
uniprot.orgEnsembl Genome Browser
Browse annotated genomes across species. Good for comparative genomics questions.
ensembl.orgData & Investigations 4
Our World in Data
Reliable datasets on health, population and biodiversity. A rich source of IA raw data.
ourworldindata.orgGBIF — Global Biodiversity Data
Species occurrence records worldwide. Strong basis for an ecology-focused investigation.
gbif.orgSocial Science Statistics — Test Calculators
Runs t-tests and chi-squared quickly, so you can check statistics done by hand.
socscistatistics.comDesmos Graphing Calculator
Plot results and fit trend lines for lab reports and internal assessments.
desmos.comReading & Research 4
Quanta Magazine — Biology
Well-written explanations of current biological research, aimed at a general audience.
quantamagazine.orgNature — News and Comment
Keep up with what is actually happening in the field. Useful context for interviews and essays.
nature.comScience News Explores
Current research written for younger readers — a gentle route into primary literature.
snexplores.orgThe Scientist
Life-science news and long-form features on technique and discovery.
the-scientist.comStudy Skills 3
Anki — Spaced Repetition Flashcards
The most effective tool for retaining terminology and pathways over a full course.
apps.ankiweb.netQuizlet — AP Biology Sets
Ready-made flashcard sets. Check them against your syllabus, as quality varies.
quizlet.comThe Learning Scientists
Evidence-based revision strategies: retrieval practice, spacing and interleaving explained.
learningscientists.orgNothing matches that filter.
Registered students also have access to the practice papers and videos above, lesson notes and worksheets, and the student Q&A community.