1. Review… Hypotonic Solution: more solute _______ the cell
What happens to the cell?
Hypertonic Solution: More solute _______ the cell

2. PRO vs. EUK Differences? Bacteria are…. Plant and Animal are…
Who discovered Cells?

3. Bacteria/Virus Are viruses living or non-living?
Are Bacteria living or non-living?
Are Bacteria larger or smaller than viruses?

4. Bacteria Cell

5. Cell Theory & Endosymbiosis

6. The Cell First discovered by Robert Hooke in 1665
Pieces of cork – he actually saw the cell walls of the plant cells

7. Cell Theory All living organisms are composed of 1 or more cells.
Cells are the basic unit of structure and organization of all living organisms.
Cells arise only from previously existing cells, with cells passing copies of their genetic material on to their daughter cells.

8. Endosymbiont Theory
This theory says that certain unicellular organisms engulfed other cells. These engulfed cells become organelles in the host cell.
Lead to the diversity of Protist (Plant-like, Animal-like, Fungus-like)
First proposed in the 1960’s by Lynn Margulis

9. Evidence of Endosymbiosis
Pg. 576
The first Eukaryotes acquired mitochondria & chloroplast by engulfing a prokaryote
Mitochondria & chloroplast have their own DNA & ribosomes b/c they were once Prokaryotic cells.