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.
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 127 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
Endosymbiosis: Definition, Endosymbiotic Theory, Evidence, and Examples
Learn what endosymbiosis is, how endosymbiotic theory explains the origins of mitochondria and plastids, the evidence supporting it, and important modern examples.
-
Chloroplast: Definition, Structure, Functions and Role in Photosynthesis
Learn what chloroplasts are, where they occur, how thylakoids, grana and stroma are organized, and how they function in photosynthesis, metabolism and cellular genetics.
-
Eukaryotic Cell: Definition, Structure, Organelles, Functions, and Examples
Learn what a eukaryotic cell is, how its organelles work together, how plant, animal, fungal and unicellular cells vary, and how eukaryotes differ from…
-
Food Vacuole: Definition, Functions, Formation, and Examples
Learn what a food vacuole is, how it forms and digests food, its functions in protists, examples in Amoeba and Paramecium, and how it…
-
Haploid: Definition, Chromosome Number, Examples
Learn what haploid means, how haploid cells relate to meiosis, their chromosome number in humans, key examples, and how haploid and diploid cells differ.
-
10 Best Microbiology Books for Students
Compare 10 of the best microbiology books for B.Sc., medical and lab students, with strengths, limitations, level and the best choice for each use.
-
Ebola Virus – Structure, Genome, Replication, Pathogenesis
Ebola Virus Ebola Virus Classification Hosts of Ebola Virus Structure of Ebola Virus Genome of Ebola Virus The genome is composed of a single strand of…
-
Watson and Crick DNA Model
In 1953, James Watson and Francis Crick made a groundbreaking contribution to the understanding of DNA structure. By combining physical and chemical data, they…
-
Ageing – Definition, Theories, and models
What is Ageing? Different Types of Aging Aging is a complex process that can be categorized into different types based on various perspectives. Understanding…
-
Host-Parasite Interactions – Definition, Types, Mechanism, Examples
What is Host-Parasite Interactions? Types of Hosts In parasitology, hosts play vital roles in the life cycle of parasites. Each type of host has…
Discover the Microscopic World
Share and explore stunning microscopic images of microorganisms in our growing community.
Sourav Pan 
