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The Cell Theory
Transcript of The Cell Theory
& Cell Similarities
In 1839, he concluded that all animal tissues are made of cells
He also wrote the first 2 parts of the Cell Theory.
A British scientist
Around 1665, he built a crude microscope which allowed him to look at tiny objects
Looked at cork (a soft plant tissue) and saw tiny boxes, which he named cells - means tiny rooms in Latin
Later observed living cells in plant tissues
Thought cells were only in plants because they were easier to observe in plants
He didn't realize it but the "cells" were actually the outer layers of cork cells
Anton van Leeuwenhoek
A Dutch merchant
In 1673, he used a handmade microscope to look at pond scum
Saw small creatures swimming around, called them animalcules
Also looked a blood, tartar from teeth
Was the first person to see bacteria and discovered yeast is a unicellular organism
A German scientist who researched cells and read what others had seen under the microscope
In 1838, he concluded that all plant parts are made of cells.
A German scientist, who, in 1858, discovered that cells come only from other living cells
He wrote the 3rd part of the cell theory
The Cell Theory
1) All living things are made of one or more cells
2) The cell is the basic unit of life in all living things.
3) Cells come only from other cells.
- surrounds cell, acts as a barrier between the cell and its environment, allows materials to enter and exit
- DNA, controls the cell's activities and contains information to make new cells
- jelly-like fluid that fills the cell
- structures that allow the cell to grow, reproduce, and live. May or may not be covered by a membrane. Means "tiny organ"
- most are too small to be seen without a microscope