Biology practice
100 biology topics across 13 areas. Choose a topic to practise with instant feedback. Generated topics create new questions each time; quiz, flashcard and diagram topics use a fixed set. After you answer, an explanation is shown.
Advanced
- Immunology deep dive (antibodies, antigens)quiz · easy
- Neuroscience deep dive (synapses, neurotransmitters)quiz · easy
- Epidemiology basics (R0, disease spread modeling)generated practice · easy
- Cancer biology basicsquiz · easy
- Stem cells & regenerative biology (conceptual)quiz · easy
- Bioinformatics basics (conceptual)quiz · easy
Botany
Cell biology
- Cell theoryquiz · easy
- Prokaryotic vs. eukaryotic cellsquiz · easy
- Cell organelles & their functionsflashcards · easy
- Cell membrane structure & functionquiz · easy
- Diffusion & osmosis calculationsgenerated practice · easy
- Active vs. passive transportquiz · easy
- Cellular respiration (overview & stages)quiz · easy
- Photosynthesis (overview & stages)quiz · easy
- Photosynthesis rate calculationsgenerated practice · easy
- The cell cyclequiz · easy
- Mitosis (stages)diagram labelling · easy
- Meiosis (stages)diagram labelling · easy
- Cell signaling basicsquiz · easy
- Enzymes & enzyme kineticsgenerated practice · easy
Ecology
- Ecosystems & energy flowquiz · easy
- Food chains & food websdiagram labelling · easy
- Trophic levels & energy pyramid calculationsgenerated practice · easy
- Population growth models (exponential/logistic)generated practice · easy
- Carrying capacitygenerated practice · easy
- Predator-prey relationshipsquiz · easy
- Symbiosis (mutualism, parasitism, commensalism)quiz · easy
- Biogeochemical cycles (carbon, nitrogen, water)quiz · easy
- Biodiversity & conservation biologyquiz · easy
- Succession (primary & secondary)quiz · easy
Evolution
- Natural selection (mechanisms)quiz · easy
- Evidence for evolutionquiz · easy
- Speciationquiz · easy
- Genetic drift & gene flowquiz · easy
- Hardy-Weinberg equilibrium calculationsgenerated practice · easy
- Phylogenetic trees (reading & interpreting)diagram labelling · easy
- Convergent vs. divergent evolutionquiz · easy
- Human evolution overviewflashcards · easy
Foundations
General
Genetics
- DNA structure & replicationquiz · easy
- RNA & the central dogmaquiz · easy
- Transcription & translationquiz · easy
- Gene expression & regulationquiz · easy
- Mendelian genetics (monohybrid Punnett squares)generated practice · easy
- Mendelian genetics (dihybrid Punnett squares)generated practice · easy
- Incomplete dominance & codominancegenerated practice · easy
- Sex-linked inheritancegenerated practice · easy
- Pedigree analysisquiz · easy
- Mutations & their effectsquiz · easy
- Genetic disorders overviewflashcards · easy
- Biotechnology basics (cloning, GMOs)quiz · easy
- CRISPR & gene editing (conceptual)quiz · easy
- Genetic engineering applicationsquiz · easy
Human anatomy & physiology
- Skeletal systemflashcards · easy
- Muscular systemflashcards · easy
- Nervous system overviewquiz · easy
- The brain & its regionsflashcards · easy
- Neuron structure & the action potentialquiz · easy
- Circulatory systemquiz · easy
- The heart & blood flowdiagram labelling · easy
- Respiratory systemquiz · easy
- Digestive systemquiz · easy
- Excretory/urinary systemquiz · easy
- Endocrine system & hormonesflashcards · easy
- Immune system overviewquiz · easy
- Reproductive system (overview)quiz · easy
- Human development (embryology overview)quiz · easy
- Skin & the integumentary systemquiz · easy
- Sensory systems (vision, hearing, etc.)quiz · easy