1. INTRODUCTION TO CELLS

2. I. CELL DIVERSITY A.Shape 1.Reflects function of the cell

3. (CELL DIVERSITY continued) B.Size 1.Giraffe – nerve cell is 2 meters long 2.Human egg cell – about size of a period at end of sentence 3.Most are microscopic

4. BASIC PARTS OF CELL  Plasma Membrane – outer boundary that covers cell’s surface

5. BASIC PARTS OF CELL CCytoplasm – all of the area and parts inside the plasma membrane but not part of the nucleus NNucleus – membrane bound structure that contains DNA

6. TWO BASIC TYPE OF CELLS

7. PROKARYOTES & EUKARYOTES  DNA as genetic material  RNA for protein synthesis  Glycolysis – breaking down glucose for energy  Ribosomes

8. PROKARYOTES Vs. EUKARYOTES  No nuclear membrane  Domains Bacteria & Archaea  Unicellular  Nuclear membrane  Domain Eukarya  Unicellular or multicellular

9. PLANT Vs. ANIMAL  Cell wall – rigid layer outside membrane  Central Vacuole – reservoir that stores large amount of water  Chloroplasts – photosynthesis takes place  No cell wall  No Central Vacuole  No Chloroplasts