Page 4 - All about cells - FULL
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What Is a Cell?
The cell is the basic building block of all living organisms. It is the smallest unit of an
organism that can carry out the functions of life.
amoeba bacteria mitotic animal cell
Robert Hooke
Robert Hooke was one of the first people
to observe cells using his own
compound microscope in 1663.
Cork Cells
To Hooke, a very thin slice of cork under
the microscope appeared to be made up of
little empty boxes, which he named cells.
Image drawn by Hooke,
1665
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