1. Introduction to Cellular Biology

2. Essential Questions What is the cell theory? What are the characteristics of prokaryotes and eukaryotes?

3. Life is Cellular Discovery of the cell: Year: 1665 Scientist: Robert Hooke Invention: microscope Robert Hooke found the first “cell” by looking through his microscope (empty chambers in a cork)

4. Cell Theory All living things are composed of small units called CELLS!!!! Cells are the basic units of life!!!! They are the basic units of structure and function New cells are produced from existing cells. Can be single cellled (___ cellular) Example: Amoeba Can be many celled (_____ cellular) Example: Humans Applies to all organisms: plants, animals, and bacteria

5. THE CELL Cells come in a variety of shapes and sizes All have 2 characteristics in common Cell membrane- surrounds the cell like a barrier Contain a molecule that contains DNA

6. Two Broad Categories Prokaryote & Eukaryote

7. Prokaryotes - does NOT have a Nuclues No nuclear membrane around DNA Don’t have membrane-bound organelles (ex: mitochondria) Small and simple Examples: Bacteria

8. Eukaryotes Contain a nucleus Have organelles Specialized cell organs Larger and more complex Example: Muscle cell Skin cell

9. STOP!!! How will we remember?? Venn Diagram

10. No nucleus No membrane-bound organelles Small and simple Examples: Bacteria Some algae Contain a nucleus (stores DNA) Have organelles Specialized cell organs Larger and more complex Cytoskeleton Example: Muscle cell Skin cell Cell membrane Cytoplasm Respond to Env. Grow Reproduce Prok. Euk.

11. Plant vs. Animal

13. 1. Vacuole 2. Golgi Apparatus 3. Cell wall 4. Cell membrane 5. Chloroplast 6. Mitochondria 7. Nucleus 8. Endoplasmic reticulum 9. Nucleolus

14. 11. Lysosome 12. ER 13. Cell membrane 14. Nucleus 15. Cytoplasm 16. Nucleolous 17. Golgi Apparatus 18. Mitochondria

15. Plant Cells Chloroplasts -photosynthesis Vacuole -storage Have a cell wall Provides strength and protection

16. Animal Cell Lysosomes -Digestive enzymes Have centrioles -Aid in cell division