First, what is a cell? It took a long time for people to discover cells and figure out what they were all about. They needed sophisticated equipment.

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Presentation transcript:

First, what is a cell? It took a long time for people to discover cells and figure out what they were all about. They needed sophisticated equipment (microscopes) to be able to see cells. Everything we know about cells we call “cell theory”

Red blood cell Cheek cell Streptococcus bacteria

Cell Theory

Prokaryote Cell A single celled organism that does not have a nucleus No membrane bound organelles

Bacteria shapes MRSA : Coccus-spherical or oval E. coli: Bacillus- rod shaped bacteria Leptospirosis: Spiral-spiral shaped

The NUCLEUS Prokaryotes do not have an organized nucleus. Their DNA is kind of floating around the cell. It's clumped up, but not inside of a nucleus. Eukaryotes do have a nucleus, allows them to make multi cellular organisms and perform more complex tasks

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