HTML University

Science Dept.

Biology BIO 100
Introduction To Cells

1. History
   1. Anton van Leeuvenhoek: Microscope

   2. Robert Hooke (1665): Coined the Word "Cell"

   3. M. J. Schleiden: Botanist (1838): Recognized the Aggregation of Cells in Plant Tissue

   4. T. Schwann (1839) Zoologist: The Cell Theory Was Extended to Animals and Developed More Fully

   5. Resolution: Capability to Clearly Separate the Images of Two Structures

2. The Cell and Its Parts
   1. Protoplasm: Total Contents of Cell

   2. Nucleus: (1831) Brown

   3. Cytoplasm: Contents of Cell Outside of Nucleus

   4. Nucleolus: Contains RNA

   5. Chromosomes: DNA

   6. Mitochondria: Power House of the Cell

   7. Golgi Apparatus: Cellular Secretion

   8. Centrioles: Plays a Role in Cell Division

   9. Endoplasmic Recticulum: Site of Protein Synthesis: Membranous Structure

   10. Lysosomes: Vacuoles Contain Enzymes that Digest Protein, Sugars, and Nucleic Acids

   11. Plastids
       1. Leucoplasts: Starch Formation and Storage

       2. Chromoplasts: Plastids wth Pigments

       3. Chloroplasts: Chlorophyll

3. Movement of Material into Cells
   1. Phagocytosis

   2. Pinocytosis

   3. Diffusion

   4. Osmosis

   5. Active Transport

4. The Cell Membrane
   1. Danielli Model: Protein Lipid Lipid Protein (one of the lipids is water soluble)

   2. Fluid Mozaic Model

5. Diffusion, Osmosis and Active Transport
   1. Diffusion

   2. Osmosis

   3. Active Transport

6. Fluids Containing Particles
   1. Mixtures

   2. Solutions
      1. Solvent

      2. Solute

   3. Colloidal Suspension
      1. Dispersing Medium

      2. Dispersed Phase

      3. EG Sol: Solid in a Liquid

      4. EG Gel: Liquid in a "Solid"

      5. Tyndall Effect

      6. Brownian Motion

7. Some Selected Bology Sites
   1. Access Excellence: Resource Center
   2. CELLS alive!
   3. IFR Images of Molecules, Cells & Tissues
   4. WEB SITES