Modern Biology: The Cell Theory

Ok, I've checked the fuel and made some adjustments. Our engine should be fine now. Let's get back in the van and see the Pyramids. The microscope helped rule out fuel contamination.

Through microscopic observations from early scientists, one of the most basic ideas of modern biology was born. It is called the cell theory.

The cell theory has three main ideas:

1. All living things must contain at least one cell.
2. The cell is the basic level of organization for living things.
3. All cells come from existing cells.

Make sure you know the cell theory!

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