Free Biology Notes for Students
Complete Biology Toolkit in One Place
Biology Notes Online provides free study notes, lecture videos and microscopic images covering microbiology, botany, zoology, biochemistry, genetics, cell biology and laboratory methods for A-level, AP, IB, BSc and MSc students.
Free Lecture Videos
Detailed Free Lecture Videos Covering Every Bio Topic – Watch & Master Easily
All Biology Topics
Explore Every Branch of Biology – Dive Deep, Scroll Wide, Learn Fast
- Agricultural Microbiology 12 posts
- Bacteriology 99 posts
- Basic Microbiology 99 posts
- Biochemistry 102 posts
- Bioinformatics 25 posts
- Biotechnology 12 posts
- Cell Biology 128 posts
- Environmental Microbiology 105 posts
- Food Microbiology 56 posts
- Genetics 99 posts
- Immunology 102 posts
- Industrial microbiology 24 posts
- Intellectual Property Rights 9 posts
- Medical Microbiology 44 posts
- Microscope 28 posts
- Molecular biology 86 posts
- Mycology 48 posts
- Parasitology 32 posts
- Phycology 25 posts
- Prions 2 posts
- Protozoa 15 posts
- Virology 66 posts
- Angiosperms 31 posts
- Archegoniate 12 posts
- Biodiversity 1 post
- Economic Botany 14 posts
- Ethnobotany 5 posts
- Horticultural 10 posts
- Natural Resource Management 3 posts
- Plant Anatomy and Embryology 20 posts
- Plant Breeding 16 posts
- Plant Ecology and Taxonomy 15 posts
- Plant Physiology and Metabolism 18 posts
- Animal Behaviour 1 post
- Basic Zoology 6 posts
- Biology of Insecta 15 posts
- Chordates 27 posts
- Developmental Biology 20 posts
- Endocrinology 17 posts
- Ethology 6 posts
- Evolutionary Biology 21 posts
- Fish and fisheries 25 posts
- Human Anatomy 16 posts
- Neuroscience 17 posts
- Non-chordates 20 posts
- Pest Management 4 posts
- Physiology 52 posts
- Protista 15 posts
- Reproductive Biology 5 posts
- Research Methodology 7 posts
- Vertebrata 13 posts
- Biochemical Test 88 posts
- Botany Practicals 2 posts
- Culture Media 79 posts
- Cytopathology 1 post
- Hematology 7 posts
- Immunology Practical 19 posts
- Instruments 151 posts
- Laboratory Techniques 5 posts
- Laboratory Tests 14 posts
- Microbiology Techniques 25 posts
- Protocols 18 posts
- Staining 43 posts
- Under Microscope 26 posts
- Differences 171 notes
- Intellectual Property Rights 9 notes
- Recommended Books 57 notes
- Research Methodology 7 notes
- Syllabus 14 notes
- Bacteriology 99 posts
- Mycology 48 posts
- Parasitology 32 posts
- Phycology 25 posts
- Prions 2 posts
- Protozoa 15 posts
- Virology 66 posts
Latest Notes
7 Best Books for Vertebrate Anatomy
Compare 7 vertebrate anatomy books for B.Sc. and university students, including core textbooks, functional anatomy references and dissection manuals.
-
Platelets – Structure, Formation, Functions and Role in Blood Clotting
Learn what platelets (thrombocytes) are, how they are formed, their structure and functions, normal platelet count, and their role in hemostasis and blood clotting.
-
Storage Granules – Definition, Types, Structure and Functions in Bacteria
Storage granules are bacterial cell inclusions that store carbon, phosphate, sulfur, and nitrogen reserves. Learn their types, structure, functions, formation, and identification.
-
10 Best Medical Microbiology and Immunology Books for Students
Compare 10 of the best medical microbiology and immunology books for medical students, with clear strengths, limitations, levels and study uses.
-
Cilia in Biology – Structure, Types, Functions and How They Move
Cilia are membrane-covered, microtubule-based projections that extend from the surface of many eukaryotic cells. Motile cilia generate movement of cells, fluids, or particles, whereas…
-
Fluid Mosaic Model – Definition, Structure, Components, Features and Importance
Learn the fluid mosaic model of the plasma membrane, including its definition, structure, components, features, membrane fluidity, evidence, limitations and modern modifications.
-
Cell Proliferation – Definition, Cell Cycle, Regulation, and Significance
Learn what cell proliferation is, how the cell cycle and growth signals regulate it, how it differs from cell growth, and why it matters…
-
Mitosis – Definition, Stages, Process, and Importance
Learn what mitosis is, how chromosomes move through each stage, the role of the mitotic spindle and cytokinesis, and how mitosis differs from meiosis.
-
Cell Coat (Glycocalyx) – Definition, Structure, Composition and Functions
Learn what the cell coat or glycocalyx is, its structure and composition, how it forms on the plasma membrane, and its major functions in…
-
Meiosis – Definition, Types, Steps, Importance, Examples
Learn what meiosis is, how meiosis I and II reduce chromosome number, how crossing over creates genetic variation, and how meiosis differs from mitosis.
Discover the Microscopic World
Share and explore stunning microscopic images of microorganisms in our growing community.
Sourav Pan 
