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 103 posts
- Basic Microbiology 102 posts
- Biochemistry 103 posts
- Bioinformatics 25 posts
- Biotechnology 13 posts
- Cell Biology 128 posts
- Environmental Microbiology 105 posts
- Food Microbiology 58 posts
- Genetics 100 posts
- Immunology 105 posts
- Industrial microbiology 24 posts
- Intellectual Property Rights 9 posts
- Medical Microbiology 45 posts
- Microscope 28 posts
- Molecular biology 87 posts
- Mycology 48 posts
- Parasitology 33 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 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 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 153 posts
- Laboratory Techniques 5 posts
- Laboratory Tests 16 posts
- Microbiology Techniques 25 posts
- Protocols 18 posts
- Staining 43 posts
- Under Microscope 26 posts
- Differences 179 notes
- Intellectual Property Rights 9 notes
- Recommended Books 59 notes
- Research Methodology 8 notes
- Syllabus 14 notes
- Bacteriology 103 posts
- Mycology 48 posts
- Parasitology 33 posts
- Phycology 25 posts
- Prions 2 posts
- Protozoa 16 posts
- Virology 67 posts
Latest Notes
Chromosome – Definition, Structure, Types, Functions and Diagram
Chromosomes are a collection of tightly coiled DNA that are located in the nucleus of virtually every cell of our body. Humans possess 23…
-
Parthenogenesis – Definition, Types, Mechanism, Examples and Significance
Parthenogenesis is a type of reproduction where the egg develops into a new individual without fertilization by a male gamete. No fertilization takes place.…
-
Double Beam Balance – Principle, Parts, Diagram, Procedure, Uses
Double beam balance definition, principle, parts, diagram, working procedure, reading, uses, advantages, limitations, errors and comparison with triple beam balance.
-
Picric Acid Test for Reducing Sugars – Principle, Procedure, Result and Uses
Picric Acid Test is a qualitative chemical test used for the detection of reducing sugars in a given sample. It detects sugars which can…
-
Host Pathogen Interaction
Host Pathogen Interaction What is Infection? Types of Infection Infectious agents (pathogens) that cause infections include: What is Invasion? A Survey of Bacterial Invasins…
-
Candidiasis – Definition, Causative Agent, Types, Transmission
Candidiasis, also known as a yeast infection, is a fungal infection caused by a group of yeasts called Candida. Candida is a normal part…
-
Isomerism – Definition, Types, Explanation, Examples
What is Isomerism? Definition of Isomerism Isomerism is the phenomenon in chemistry where molecules or ions have the same molecular formula but differ in…
-
Types of Chromatography With their Definition, Principle, Steps, Uses
What is Chromatography? Chromatography Definition Chromatography is a technique used to separate and analyze the components of a mixture based on their properties and…
-
Microscope Nosepiece – Explained
Ever peered through a microscope and marveled at the microscopic universe it unveils? It’s like being Alice in her Wonderland, but instead of falling down…
-
Glass Serological Pipettes – Everythings You Need to Know
Glass serological pipettes are usually described as long, cylindrical measuring tools used for transferring the Liquid volumes that are needed in Cell Culture work,…
Discover the Microscopic World
Share and explore stunning microscopic images of microorganisms in our growing community.
Sourav Pan 
