Cell Theory

• Is a fundamental concept of biology.

• It states: – All living things are composed of cells. – Cells are the basic units of structure and function in living

things. – New cells are produced from existing cells

Eukaryotic vs. Prokaryotic Cells

http://dsc.discovery.com/tv-shows/other-shows/videos/assignment-discovery-shorts-eukaryote-prokaryotes.htm

Eukaryotic cell types

• Can be found in … 1. Animals

Eukaryotic cell types

• Can be found in …

2. Plants

Eukaryotic cell types

• Can be found in …

3. Fungi

Eukaryotic cell types

• Can be found in …

4. Protists - unicellular organisms ( ONE CELL)

Prokaryotic Cells

• Can be found in.. 1. Bacteria

Prokaryotic Cells

• Can be found in.. 2. Archaebacteria – bacteria that can be found in extreme environments. Genetically different from bacteria.

Differences

Prokaryotic Cells • No Nucleus: DNA is free

floating in the cell. • Small and simple organisms.

Eukaryotic Cells • Have a true nucleus and

membrane bound organelles.

• Are larger and more complex than prokaryotes

Similarities

Prokaryotic Cells and Eukaryotic Cells • Cell membrane • DNA • Cytoplasm • Ribosomes • Both meet ALL 8

characteristics of life