1. Cell Theory: 1. Every organism is composed of one or more cells. 2. The cell is the smallest unit that has the properties of life. 3. The continuity of life arises directly from the growth and division of single cells. Cells

2. Eukaryotic Cells have a nucleus have organelles (compartments that enable a cell to function and reproduce) Animal Cells Fungi Plants

3. Plant cell Cell membrane Examples of Eukaryotic cells Plant cells

4. Aquatic Plant - Elodea

5. Parts of the Elodea Cell Cell membrane

8. Osmosis and Diffusion in the Elodea leaf Think about the 15% salt solution What is a plant cell made up of?

9. A hypertonic solution the net movement of water is out of the cell Types of Solutions A hypotonic solution the net movement of water is into the cell

10. Piece of Elodea at 10X

11. Elodea at 40X

12. Normal Elodea cells at 100X with the oil lens

13. Lab Procedure What will you make happen!

14. Elodea cells in NaCl solution The contents of the cells have been reduced to the spherical structures shown

15. Making a Crystal – Lab 26