AP Biology simulations and calculators
Practice questions
Biology simulations
Diffusion and Osmosis SimulatorEnzyme Kinetics SimulatorPhotosynthesis and Limiting Factors SimulatorMitosis and Meiosis SimulatorDNA and RNA Folding ViewerProtein Synthesis Simulator: Transcription and TranslationPCR SimulatorGel Electrophoresis SimulatorNatural Selection and Population Genetics SimulatorPredator and Prey Population SimulatorBacterial Growth Simulator
Biology lab calculators
Guides
How to Reverse Complement a DNA SequenceHow to Translate DNA to ProteinHow to Find Restriction Sites in a DNA SequenceHow to Design and Check PCR PrimersHow to Calculate a Dilution (C1V1 = C2V2)How to Use a Punnett SquareDNA and Protein Sequence Statistics ExplainedHow to Calculate qPCR Fold Change With ΔΔCtHow to Calculate Primer Tm and Annealing TemperatureHow to Make a Standard CurveHow to Calculate an IC50How to Make a PCR Master MixHow to Make an Agarose GelHow to Read a Plasmid MapHow to Calculate Cell Doubling TimeHow to Calculate GC ContentHow to Calculate a Dilution FactorHow to Calculate DNA Copy NumberHow Gel Electrophoresis Works and How to Read a DNA GelMitosis vs Meiosis: the Phases, Crossing Over and NondisjunctionHow Chromatography Works: Rf Values, Columns and ResolutionHow Protein Synthesis Works: Transcription, Translation and MutationsPhotosynthesis and Limiting Factors: Light, Carbon Dioxide and TemperaturePredator and Prey Cycles: The Lotka–Volterra Equations ExplainedSIR and SEIR Epidemic Models: R₀, Herd Immunity and Flattening the Curve