Biology Study Notes
A Level · Free revision notes covering the complete syllabus
Cell Biology
Structure and function of cells, cell membranes, and transport mechanisms
Cell Structure and Organelles
45 min read
Prokaryotic vs Eukaryotic Cells
40 min read
Cell Membranes and Fluid Mosaic Model
50 min read
Diffusion, Osmosis and Active Transport
55 min read
Cell Division: Mitosis
50 min read
Cell Division: Meiosis
50 min read
Biological Molecules
Structure and function of carbohydrates, lipids, proteins and nucleic acids
Water and Its Properties
35 min read
Carbohydrates: Monosaccharides to Polysaccharides
50 min read
Lipids: Triglycerides and Phospholipids
45 min read
Proteins: Amino Acids and Peptide Bonds
50 min read
Protein Structure: Primary to Quaternary
55 min read
Enzymes: Structure and Mechanism
55 min read
Enzyme Kinetics and Inhibition
50 min read
DNA and RNA Structure
50 min read
Genetics and Inheritance
DNA replication, gene expression, inheritance patterns and genetic variation
DNA Replication
50 min read
Transcription and Translation
55 min read
The Genetic Code
40 min read
Gene Mutations
45 min read
Mendelian Genetics: Monohybrid Inheritance
50 min read
Dihybrid Inheritance and Linkage
55 min read
Sex Linkage and Codominance
50 min read
Hardy-Weinberg Principle
45 min read
Ecology and Evolution
Ecosystems, energy flow, population dynamics and evolutionary mechanisms
Ecosystems and Energy Flow
50 min read
Food Chains and Food Webs
40 min read
Nutrient Cycles: Carbon and Nitrogen
50 min read
Population Ecology
45 min read
Natural Selection and Adaptation
50 min read
Speciation and Reproductive Isolation
45 min read
Biodiversity and Conservation
45 min read
Physiology: Transport and Exchange
Gas exchange, transport systems in plants and animals
Gas Exchange in Mammals
50 min read
The Mammalian Heart and Cardiac Cycle
55 min read
Blood, Tissue Fluid and Lymph
45 min read
Haemoglobin and Oxygen Transport
50 min read
Transport in Plants: Xylem and Phloem
55 min read
Transpiration and Water Potential
50 min read
Physiology: Control and Coordination
Nervous system, hormonal control, homeostasis and immunity
Neurons and Nerve Impulses
55 min read
Synaptic Transmission
50 min read
The Brain and Nervous System
50 min read
Hormonal Control and Endocrine System
50 min read
Homeostasis: Temperature Regulation
45 min read
Homeostasis: Blood Glucose Regulation
50 min read
Immune System and Defence Mechanisms
55 min read
Vaccines and Monoclonal Antibodies
45 min read