CELL STRUCTURE AND FUNCTION

1. Unit of all living matter 2. Capable of self reproduction

from preexisting cells. 3. Microscopes needed to observe

due to smallness. 4. Science-Cytology 5.Cell volume to cell surface

CELL STRUCTURE AND FUNCTION contd.

5. Cell Types (a) Prokaryotic (b) (Eukaryotic) 6. Cell Variety 7. Description (viscuous; colloidal) Cyclosis 8.History (Hooke; Purkinje;

Schleiden & Schwann)

CELL ORGANELLES

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

CELL ORGANELLES contd.

8. Microbodies 9. Mitochondria 10. Chloroplast 11. Centrioles 12. Cilia & Flagella 13. Nucleus & Nucleolus Chromosomes

CELL STRUCTURE & FUNCTION contd.

{Cell Permeability} I. Molecules that become

incorporated into cells without going through the cell wall.

A. Pinocytosis B. Phagocytosis II. Molecules that become

incorporated into cell by passing through the wall.

CELL STRUCTURE & FUNCTION contd.(Cell Permeability)

MEMBRANE PERMEABILITY (a) Permeable (b) impermeable (c differentially permeable DIFFUSION (DEFINITION &

EXAMPLE) 1. Dialysis 2. Osmosis (c Active Transport