We’ve spent weeks looking at individual microscopic units, but a trillion cells floating around independently wouldn't be much of a human being! To make a complex multicellular organism, you need order. As Lottie puts it, you can't just call a pile of loose bricks a "house."

In this episode of GCSE Science Unlocked, Lottie and Mr. H step up to a brand-new unit: Section 4.2.1: Principles of Organisation. We break down the structural hierarchy of life from a single building block to complete organ systems, explore the multi-tissue teamwork happening inside your stomach, and introduce the fundamental purpose of the human digestive system.

🎧 What You'll Learn in This Episode:

• The Living Hierarchy: The essential sequence you must know inside out: Cell -> Tissue -> Organ -> Organ System -> O ...