Every living thing is built from cells. Inside each cell, tiny structures called organelles each do a specific job — from generating energy to storing instructions — working together to keep the cell alive.
Cells are the foundation of all biology — health, disease, genetics and growth all begin here. Knowing the parts is the first step to understanding life itself.
The control centre that stores DNA and directs the cell’s activities.
The powerhouses that release energy the cell can use.
The gatekeeper that controls what enters and leaves the cell.
Each part has a role; together they keep the whole cell running.
Think of a cell as a tiny city: the nucleus is the town hall, mitochondria are power stations, and the membrane is the border wall controlling traffic.
Each organelle’s shape suits its job — folded membranes for surface area, tiny factories for building proteins.
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