Video narration
How does one tiny cell stay alive when you cannot see any workers or tools? Think of it like a school-not a blob, but a workplace with different departments. The nucleus is the instruction center, storing DNA and directing activities. Ribosomes read those instructions and build proteins. Mitochondria release usable energy from food, powering the work. Inside the cell, the endoplasmic reticulum helps make and move materials. The Golgi apparatus modifies, sorts, and ships them. Lysosomes break down waste and recycle worn-out parts. The cell membrane controls what enters and leaves. An organelle is not an interchangeable piece. Each has a coordinated job, and materials and information move between them. So how does the cell stay alive without visible workers? Like a school: its departments share the work. One gives instructions; others build, power, transport, recycle, and control-and together they keep the cell functioning.