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 104 posts
- Basic Microbiology 94 posts
- Biochemistry 104 posts
- Bioinformatics 25 posts
- Biotechnology 13 posts
- Cell Biology 131 posts
- Disease 7 posts
- Ecology 34 posts
- Environmental Microbiology 71 posts
- Epidemiology 1 post
- Food Microbiology 58 posts
- Genetics 100 posts
- Immunology 104 posts
- Industrial microbiology 24 posts
- Intellectual Property Rights 9 posts
- Medical Microbiology 37 posts
- Microbiologists 8 posts
- Microscope 28 posts
- Molecular biology 87 posts
- Mycology 49 posts
- Parasitology 34 posts
- Phycology 25 posts
- Prions 2 posts
- Protozoa 16 posts
- Virology 67 posts
- Angiosperms 32 posts
- Archegoniate 12 posts
- Biodiversity 1 post
- Economic Botany 15 posts
- Ethnobotany 5 posts
- Horticultural 10 posts
- Natural Resource Management 3 posts
- Plant Anatomy and Embryology 19 posts
- Plant Breeding 16 posts
- Plant Ecology and Taxonomy 15 posts
- Plant Physiology and Metabolism 19 posts
- Animal Behaviour 1 post
- Basic Zoology 6 posts
- Biology of Insecta 15 posts
- Chordates 27 posts
- Developmental Biology 22 posts
- Endocrinology 17 posts
- Ethology 6 posts
- Evolutionary Biology 21 posts
- Fish and fisheries 25 posts
- Human Anatomy 17 posts
- Neuroscience 17 posts
- Non-chordates 20 posts
- Pest Management 5 posts
- Physiology 52 posts
- Protista 15 posts
- Reproductive Biology 5 posts
- Research Methodology 8 posts
- Vertebrata 13 posts
- Biochemical Test 95 posts
- Botany Practicals 2 posts
- Culture Media 79 posts
- Cytopathology 1 post
- Hematology 7 posts
- Immunology Practical 19 posts
- Instruments 149 posts
- Laboratory Techniques 5 posts
- Laboratory Tests 16 posts
- Microbiology Techniques 25 posts
- Protocols 18 posts
- Solution preparation 21 posts
- Staining 43 posts
- Under Microscope 26 posts
- Differences 184 notes
- Intellectual Property Rights 9 notes
- Recommended Books 59 notes
- Research Methodology 8 notes
- Syllabus 14 notes
- Bacteriology 104 posts
- Mycology 49 posts
- Parasitology 34 posts
- Phycology 25 posts
- Prions 2 posts
- Protozoa 16 posts
- Virology 67 posts
Latest Notes
Endospore – Structure, Sporulation, Germination and Examples
Learn what an endospore is, its structure, formation, types, resistance, germination, staining, examples and importance in medicine and food safety.
-
Reverse CAMP test – Principle, Procedure, Result, Uses
Reverse CAMP test is used in microbiology for identification of Clostridium perfringens, Arcanobacterium haemolyticum, and reverse CAMP positive bacteria. Learn its principle, positive result,…
-
Models of Energy Flow in a Ecosystem – Linear, Y-shaped and Universal Energy Flow Model
What is Energy Flow in an Ecosystem? Energy flow models are used to show how energy passes through different trophic levels of an ecosystem.…
-
Orientation Patterns of Behaviour – Types, Importance, Examples
What is Orientation in Animal Behaviour? Orientation in animal behaviour is the process by which an animal finds and maintains a particular direction or…
-
Exocytosis – Definition, Steps, Types, Functions and Examples
Exocytosis is the vesicle-mediated release of materials from cells. Learn its steps, types, molecular mechanism, functions, examples and differences from endocytosis.
-
Metaphase – Definition, Stages, Applications
Metaphase is the stage of mitosis and meiosis when chromosomes align at the cell equator. Learn its events, checkpoint, types, diagram and significance.
-
Cytoplasm – Definition, Structure, Components and Functions
Learn what cytoplasm is, where it is found, its main components and functions, and how it differs from cytosol, protoplasm and nucleoplasm.
-
Membrane Carbohydrates – Structure, Types, Location and Functions
Membrane carbohydrates are glycans attached to proteins and lipids. Learn their structure, types, location, glycocalyx, functions, synthesis and examples.
-
Plant Cell – Definition, Structure, Organelles and Functions
Learn the structure of a plant cell, its organelles and functions, labeled diagram, specialized cell types, and differences from animal cells.
-
Strongyloides stercoralis – Morphology, Life Cycle, Pathogenesis, Diagnosis and Treatment
Strongyloides stercoralis is a soil-transmitted parasitic nematode and the major causative agent of strongyloidiasis in humans. It has both free-living generation in the soil…
Discover the Microscopic World
Share and explore stunning microscopic images of microorganisms in our growing community.
Sourav Pan 
