Cell Theory and The Microscope

Cell Theory

and

The Microscope!

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Objective

Identify and describe the cell theory and implement the skill of microscope investigation.

What in the world do we mean by theory?

In common language

Scientific use

the cell theory states the following:

• The Cell is the basic unit of life!

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• All living things are composed of cells.

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• Cells come from pre-existing cells.

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Evidence

We have never been able to observe the cell theory to NOT be true.

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The Exceptions

Although most organisms conform to cell theory, there are exceptions

Fungal

skeletal

Giant

Hyphae

muscles

Algea

A fungal cell that is atypical

Muscle cells that are large and have multiple nuclei

Huge, single celled organism with a single nucleus

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