Pearson IGCSE Human Biology including Exams

Orientate yourself to the Pearson Edexcel IGCSE Human Biology specification, examination format and assessment objectives. This introductory unit explains what the IGCSE qualification involves, how it is graded, what topics are examined and how exam questions are structured. It provides a learning framework for the rest of the course and introduces effective online study strategies, including how to use practice questions, past papers and tutor support effectively.

Develop the study skills and online learning habits that will support your progress through the IGCSE specification. This unit covers time management, note-taking methods, active reading and recall strategies, and how to use the learndirect platform and tutor feedback most effectively. It provides practical advice on creating a study routine that fits around existing commitments and building the independent learning habits that IGCSE Human Biology demands.

Examine the fundamental building blocks of the human body at the microscopic level. This unit covers the structure and function of the eukaryotic cell, the organelles involved in energy production, protein synthesis and cellular transport, the organisation of cells into tissues, and the processes of cell division including mitosis and meiosis. Learners develop the ability to interpret microscope images and draw labelled diagrams of cells and tissues as required in IGCSE examination questions.

Investigate the key chemical compounds that form the structural and functional basis of living organisms. This unit covers the structure and biological roles of carbohydrates, lipids, proteins and nucleic acids, the action of enzymes and the factors affecting enzyme activity, including temperature, pH and substrate concentration. Learners practise interpreting data from enzyme experiments and applying molecular biology concepts to human health and nutrition contexts.

Examine the structure and function of the human musculoskeletal system. This unit covers the composition and function of bone, the different types of joints and the range of movement they permit, the structure of skeletal muscle and the mechanism of muscle contraction using the sliding filament theory. Learners consider common disorders of the musculoskeletal system and relate the biomechanics of movement to real-world sporting and clinical contexts.

Explore how the human nervous system and endocrine system regulate and coordinate the body's responses to internal and external stimuli. This unit covers the structure and function of neurons, the transmission of nerve impulses, reflex arcs, the structure of the brain and spinal cord, the function of major sense organs, and the role of hormones from glands including the pituitary, thyroid, adrenal and pancreatic glands. Learners examine how the two coordination systems work together to maintain physiological balance.

Investigate the nutritional requirements of the human body and the physiological processes by which food is digested, absorbed and utilised. This unit covers the major food groups and their functions, the digestive system — from ingestion to absorption — the liver's metabolic roles, and the calculation and application of energy requirements across different populations. Learners examine the links between diet, health and disease, including malnutrition, obesity and diet-related non-communicable diseases.

Examine the cellular and physiological processes by which the human body releases energy from organic molecules. This unit covers aerobic respiration in detail, including the role of mitochondria, the stages of respiration and the production of ATP, as well as anaerobic respiration and the concept of oxygen debt. Learners apply an understanding of respiration to exercise physiology, fatigue and recovery, and relate these concepts to clinical scenarios involving respiratory dysfunction.

Explore the anatomy and physiology of the human respiratory system and the mechanisms by which gas exchange occurs at the lungs and body tissues. This unit covers the structure of the thorax and lungs, the mechanics of breathing — including the roles of the diaphragm and intercostal muscles — the diffusion of oxygen and carbon dioxide across the alveolar membrane, and the transport of respiratory gases in the blood. Learners examine the effects of smoking, infection and disease on gas exchange efficiency.

Investigate the structure and function of the human cardiovascular system. This unit covers the anatomy of the heart, the cardiac cycle, the control of heart rate, the structure and function of arteries, veins and capillaries, and the composition and functions of blood including red blood cells, white blood cells, platelets and plasma. Learners examine the clotting mechanism, the lymphatic system and cardiovascular disease, relating physiology to risk factors, prevention and clinical management.

Examine the physiological processes by which the human body maintains a stable internal environment. This unit covers the concept of homeostasis and negative feedback, the regulation of blood glucose by insulin and glucagon, the role of the kidneys in osmoregulation and excretion — including the structure of the nephron and the processes of filtration, reabsorption and secretion — and the regulation of body temperature. Learners evaluate the consequences of homeostatic failure in conditions such as diabetes mellitus and renal disease.

Explore human reproductive biology and the principles of genetics and heredity. This unit covers the structure and function of the male and female reproductive systems, the hormonal control of the menstrual cycle and pregnancy, foetal development and birth, and the biology of contraception. The genetics component covers monohybrid and dihybrid inheritance, sex-linked traits, the inheritance of genetic disorders, and the basic principles of genetic technology. Learners interpret genetic diagrams and apply probability to inheritance predictions.

Investigate the major categories of human disease, their causes, transmission, prevention and treatment. This unit covers communicable diseases caused by bacteria, viruses, fungi and parasites, including the body's defence mechanisms — innate and adaptive immunity, the roles of lymphocytes and antibodies, and the principles of vaccination. Non-communicable diseases including cancer, cardiovascular disease and diabetes are examined alongside public health approaches to disease prevention and control at population level.

Prepare for your Pearson Edexcel IGCSE Human Biology examinations with a set of comprehensive mock papers that replicate the format, timing and mark scheme of the real sittings. This unit includes full-length practice papers for both IGCSE examination papers, examiner-style mark schemes, and tutor-reviewed feedback on your performance. Learners develop examination technique, time management under exam conditions and the ability to identify and address gaps in their knowledge before their real Pearson Edexcel sittings.