Bones are the body’s quiet workhorses—strong, living structures that support movement, protect vital organs, and store essential minerals. Far from being static, they’re constantly renewing themselves, adapting to the stresses of daily life. This section explores how bones grow, heal, and keep us moving with remarkable resilience.

Organs don’t work alone—they form interconnected systems that keep the body balanced, responsive, and alive. From the heart pumping blood to the lungs exchanging oxygen, each system performs specialised tasks while coordinating with the others. This section explores how these organs and systems interact to maintain the body’s remarkable harmony.

Every living thing begins at the cellular level. Inside each cell, DNA acts as a master blueprint, carrying the instructions that shape growth, function, and identity. This section explores how cells work, how DNA stores and shares information, and how these tiny building blocks drive the complexity of life.

Understanding disease begins with recognising how the body responds when something disrupts its natural balance. Medications play a key role in managing these conditions, helping the body restore stability and function. This section introduces how diseases develop, how treatments work, and how science continues to improve the ways we care for human health.

Health isn’t just the absence of illness—it’s the ongoing balance of body, mind, and daily habits. From nutrition and movement to rest and emotional resilience, wellbeing is shaped by the choices we make and the environments we live in. This section explores the foundations of healthy living and how small, sustainable actions can support a stronger, more vibrant life.

All living organisms can be grouped into three major domains, each representing a different branch on the tree of life. From simple, ancient microbes to complex plants and animals, these domains help us understand how life is organised, how species are related, and how evolution has shaped the diversity we see today. This section introduces the three domains and what makes each one unique.

Plants are the foundation of life on Earth. They capture sunlight, produce oxygen, and create the energy that fuels entire ecosystems. From towering trees to tiny mosses, plants shape environments, support wildlife, and provide the resources humans rely on every day. This section explores how plants grow, adapt, and keep our planet thriving.

The environment is the interconnected system of air, water, land, and living things that supports all life on Earth. It shapes the conditions we depend on—from the climate we live in to the resources we use every day. This section explores how natural systems work, why they matter, and how changes in the environment affect the world around us.

Biology has been shaped by scientists whose discoveries transformed our understanding of life itself. From uncovering the structure of DNA to revealing how ecosystems function, these researchers have expanded our knowledge of how living organisms grow, adapt, and interact. This section highlights influential biologists and the breakthroughs that continue to guide modern biological science.