2. CELL STRUCTURE AND FUNCTION l 1. Unit of all living matter l 2. Capable of self reproduction from preexisting cells. l 3. Microscopes needed to observe due to smallness. l 4. Science-Cytology l 5.Cell volume to cell surface

3. CELL STRUCTURE AND FUNCTION contd. l 5. Cell Types l (a) Prokaryotic (b) (Eukaryotic) l 6. Cell Variety l 7. Description (viscuous; colloidal) l Cyclosis l 8.History (Hooke; Purkinje; Schleiden & Schwann)

4. CELL ORGANELLES l 1. Plasma membrane l 2. Cell wall l 3. Endoplasmic reticulum (ER) l 4. Ribosomes l 5. Golgi Body l 6. Lysosome l 7. Vacuoles

5. CELL ORGANELLES contd. l 8. Microbodies l 9. Mitochondria l 10. Chloroplast l 11. Centrioles l 12. Cilia & Flagella l 13. Nucleus & Nucleolus l Chromosomes

6. CELL STRUCTURE & FUNCTION contd. {Cell Permeability} l I. Molecules that become incorporated into cells without going through the cell wall. l A. Pinocytosis l B. Phagocytosis l II. Molecules that become incorporated into cell by passing through the wall.

7. CELL STRUCTURE & FUNCTION contd. (Cell Permeability) l MEMBRANE PERMEABILITY l (a) Permeable (b) impermeable l (c differentially permeable l DIFFUSION (DEFINITION & EXAMPLE) l 1. Dialysis 2. Osmosis (c Active l Transport