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 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
Fusarium Wilt – Causes, Hosts, Symptoms, Diagnosis, Prevention
What is Fusarium Wilt? Fusarium wilt is a prevalent soil-borne fungal affliction produced by Fusarium oxysporum, affecting various plants such as tomatoes, bananas, cucumbers,…
-
Amoeba Cell – Labeled Structure, Characteristics, Movement, Nutrition, Reproduction, Disease, Habitat.
In this article, we will learn about the Habitat, structure, nutrition, characteristics, reproduction, locomotion of the Amoeba cell with diagram. Domain Eukaryota Phylum Amoebozoa…
-
Glycolysis Pathway – 10 Steps, Enzymes, Products, ATP Yield & Regulation
Learn glycolysis with a complete 10-step pathway, enzymes, reactions, ATP and NADH yield, regulation, products, diagrams, and quick revision tables.
-
The Germ Theory of Disease – Experiments, Principles, Key Figures
What is Germ Theory of Disease? Germ theory of disease is a scientific theory. It states that many infectious diseases are caused due to…
Ovaries – Definition, Structure, Hormones, Functions
What is Ovary? Definition of Ovary The ovary is a reproductive organ in females that produces eggs and secretes hormones like estrogen and progesterone,…
-
Monocytes – Definition, Structure, Types, Functions and Normal Range
Learn what monocytes are, their structure, three human monocyte types, immune functions, development, normal blood count, and what high or low levels mean.
-
History of Microbiology
The Emergence of Microbiology: Uncovering Microbes Microbiology, the study of microscopic living organisms, is a relatively recent scientific field that has significantly advanced our…
-
History, Branches, and Career Opportunities of Microbiology
What is Microbiology? Microbiology, derived from the Greek words μῑκρός (mīkros) meaning ‘small’, βίος (bíos) meaning ‘life’, and -λογία (-logía) meaning ‘study of’, is…
-
Three-domain system – Carl Woese’s Classification
All living organisms are grouped into three major categories under the three-domain system, a modern way to classify life based on genetic and evolutionary…
-
Microorganism – Definition, Types, Importance, Examples
What is Microorganism? Definition of Microorganism A microorganism, or microbe, is a tiny living organism that is invisible to the naked eye and can…
Discover the Microscopic World
Share and explore stunning microscopic images of microorganisms in our growing community.
Sourav Pan 
