Put These Notes into Practice
Reading the notes is a great start. Now practice with unlimited AI-generated questions and get instant feedback. 100,000+ students are already improving their grades.
Human Biology
9 sections available · 47 chapters available
Free Human Biology study notes for Pearson Edexcel IGCSE students. Each chapter breaks down a key concept with examples and practice prompts you can turn into AI drills in the thinka app.
Cells, molecules and transport
Cell structure and tissues
DNA, protein synthesis and genetic engineering
Mitosis and stem cells
Biological molecules and food tests
Enzymes and immobilised enzymes
Movement of substances in and out of cells
Support and movement
Skeleton and bone structure
Joints and synovial joints
Muscles and movement
Diet, bone health and osteoporosis
Coordination and response
Nervous system, neurones and reflexes
Hormones and endocrine glands
The eye, vision and eye defects
The ear, hearing and balance
Drugs, alcohol and the nervous system
Mental illness and degenerative diseases
Nutrition and digestion
Balanced diet and dietary variation
Nutrients, vitamins and deficiency diseases
Digestion, enzymes and absorption
Teeth, BMI and food hygiene
Respiration and gas exchange
Aerobic and anaerobic respiration, ATP
Thorax, ventilation and gas exchange
Lung volumes and spirometer traces
Exercise, fitness and oxygen debt
Smoking and respiratory damage
Internal transport, homeostasis and excretion
Blood, tissue fluid and blood groups
Heart, blood vessels and circulation
Heart disease, hypertension and treatments
Monoclonal antibodies
Skin and temperature regulation
Kidneys, ADH and osmoregulation
Blood glucose control and negative feedback
The liver and detoxification
Reproduction and heredity
Reproductive systems, meiosis and the menstrual cycle
Pregnancy, birth and development
Contraception and IVF
Genes, alleles and monohybrid inheritance
Inherited conditions, pedigrees and variation
Disease, immunity and hygiene
Pathogens, viruses and bacteria
Named diseases and their transmission
Immunity, vaccination and antibody-antigen reactions
Antibiotics and resistant pathogens
Decomposers and sewage treatment
Practical and mathematical skills
Practical investigations: molecules and enzymes
Practical investigations: body systems and exercise
Experimental design, variables and evaluation
Data handling, graphs and calculations
Done reading? Test yourself with AI practice questions
Practice This Topic Now