GCSE Biology

cell biology

The building blocks of life, made visible. From the structures inside cells to the microscopes that reveal them, work explores how bacteria differ from plants and animals, how organisms release energy through respiration, and why microorganisms matter — cultured in the lab and harnessed in brewing and baking.

transport in cells

Nothing lives in isolation. Work explores how substances move — diffusion, osmosis and active transport — why small organisms manage without specialised systems, and how fish and mammals evolved exchange surfaces and transport systems to keep every cell supplied.

From a single fertilised egg to a complex organism. Work explores cell division, differentiation and stem cells, why size forces organisms to specialise, and how the digestive and circulatory systems work together to nourish the body.

How plants get everything they need from light, air and soil. Work explores the adaptations behind photosynthesis, the factors that limit its rate, and the twin transport systems — xylem and phloem — that move water and food through the plant.

What makes us ill, and how we fight back. Work explores the lifestyle and environmental factors behind non-communicable disease, how pathogens spread, and the body’s defences — from skin to the immune system and vaccination — before turning to how plants resist attack.

Co-ordination and Control

Keeping the body in balance. Work explores homeostasis through the nervous and endocrine systems — how we sense and respond, regulate temperature, glucose and water, control reproduction and fertility — and how plants, too, respond to the world through hormones.

The code that builds us. Work explores DNA and protein synthesis, mutation and the Human Genome Project, how sex cells form through meiosis, and how Mendel’s work lets us trace and predict the inheritance of characteristics and disease.

Why no two of us are alike — and what that difference makes possible. Work explores the causes of variation, the struggle for existence and natural selection, the evidence Darwin and Wallace drew on, and the forces, from selective breeding to mass extinction, that reshape life over time.

Life in connection. Work explores how energy flows and is lost through food chains, how living and non-living factors shape communities, how human activity threatens biodiversity, and how carbon, water and nutrients cycle endlessly through an ecosystem.

Cell biology

The foundations, revisited for exam mastery. Work consolidates cell structure and division, differentiation and stem cells, microscopy and culturing, and the transport processes — diffusion, osmosis and active transport — that move materials across membranes.

How living things are built and run. Work draws together the principles of organisation, the digestive system and enzyme action, animal and plant tissues, non-communicable disease, and the transport systems that keep plants alive.

Disease and defence in depth. Work explores communicable diseases across humans and plants, the body’s defence systems, vaccines, antibiotics and painkillers, and the discovery of drugs and monoclonal antibodies that push medicine forward.

The chemistry of life’s energy. Work explores photosynthesis and the factors that limit it, aerobic and anaerobic respiration, the body’s response to exercise, and the web of reactions we call metabolism.

The final stretch. Revision is active: core concepts revisited, past papers practised, exam technique sharpened — turning three years of biology into confident, exam-ready understanding.