Transport in Cells & Cell Thoery

1. Transport in Cells & Cell Thoery

2. Animal Cell

3. Plant Cell

4. Classification & Cells Classification: Each of the five kingdoms of classification have different types of cells. Monera Procaryotic (DNA throughout cell). Cell wall. E.g. bacteria. Fungi Eucaryotic (DNA in nucleus). Cell wall. E.g. mushrooms. Protist Eucaryotic. Some with cell wall. E.g. amoeba. Plant Eucaryotic. Cell wall. Trees, shrubs etc. Animal Eucaryotic. No cell wall. People, dogs.

5. Cell Theory Cell Theory: Cells are the basic building block of all living things. (atoms > molecules >) cells > tissues > organs > body systems

6. How do some materials move in and out of cells?

7. Diffusion Diffusion: The spreading out of substances from high to low concentration. This happens to even out the concentration of a substance. Example: Food dye spreading in a swimming pool or at the beach.

8. Diffusion – food dye in water

9. Diffusion – high concentration to low concentration

10. Diffusion

11. Diffusion (continued) Water is the most common substance to diffuse in a cell, but food, oxygen, carbon dioxide and minerals also diffuse.

12. Osmosis

13. Osmosis

14. Osmosis Osmosis: Is diffusion of water across a semi-permeable membrane. Water moves across a semi-permeable membrane to even out concentration of solution on both sides of the membrane. But not all solutes are allowed across a semi-permeable membrane. Example: Carbon dioxide and oxygen move from the lung to and from the bloodstream through osmosis. These then move into and out of cells in our body.

15. Semi-permeable membrane

16. Osmosis – important fact A breathalyzer works because alcohol passes easily across the semi-permeable membrane of the lung into our breath to be picked up by the breathalyzer.