Interactive biology, built to be explored
See biology move.
Free simulators and 3D models of cells, DNA, the human body and the experiments you do in a biology lab. Change a variable and watch what happens. No sign-up, nothing to install.
- 9subject areas, from cells to ecosystems
- 4learning modes: Simulate, Explore, Practice, Quiz
- 3Dorgans, cells and real molecules you can rotate
- 0accounts, downloads or fees
The lab is being built — the Virtual Microscope is open now.
Virtual Microscope
A real light microscope in 3D: focus it, light it and explore 11 slides at true scale — from onion cells to living pond water, with guided investigations.
Subject areas
Cell Biology
Animal and plant cells, organelles, mitosis, meiosis, osmosis and membrane transport.
Genetics & DNA
DNA structure and replication, protein synthesis, Punnett squares and inheritance.
Human Body
The heart and cardiac cycle, neurons, the skeleton, breathing and digestion.
Biochemistry
Enzymes and reaction rates, photosynthesis and cellular respiration.
Plant Biology
Leaf structure, transpiration, tropisms and plant reproduction.
Microbiology
Bacteria, viruses, growth curves and the immune response.
Ecology & Evolution
Natural selection, food webs, predator–prey cycles and Hardy–Weinberg.
Virtual Lab
Microscope, micropipette, gel electrophoresis, PCR and serial dilution.
Biology Calculators
Magnification, dilution, Hardy–Weinberg and population growth.
How every simulator is built
- Drawn from a primary sourceEach tool starts from a standard textbook model, which the article cites so you can check it.
- Numerically validatedRates, ratios and curves are tested against worked examples with known answers before the page goes live.
- Made to be exploredSimulate, Explore, Practice and Quiz modes take you from watching to understanding to being tested.
- Corrected when reportedEvery page shows when it was last reviewed, and mistakes you report are fixed.
From the maker of MechSimulator, free engineering and science simulators.