Everybody in the world is made up of cells. Cells are basically the building blocks of life!
Human cells contain three main parts: Cytoplasm, Nucleus and the cell membrane.
Cell membrane: controls the stuff that goes in and out of the cell(carbon dioxide, oxygen...etc)
Nucleus: Controls the activities of the cell
Cytoplasm: A jelly-like substance which contains the other parts of the cell with other functions
The biggest cell in the human body is the egg cell.
There are about three hundred to five hundred trillions of cells in our body!
An average cell is about three-hundredth of a millimeter wide!
A plant cell however, has a cell membrane, a nucleus, cytoplasm and a cell wall and chloropolasts.
Cell wall: Protects the cell and gives it a regular shape
Chloroplast: Contains chlorophyll and helps the plant to photosynthesise
Cells undergo cell division, also known as mitosis.
When cells undergo this process, it copies its nucleus and splits into two identical cells with the same DNA.
As they multiply, you would grow bigger.
Many cells form a tissue.
Many tissues form an organ.
Several organs form an organ system.
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