1. Cell Theory and the Microscope

2. What is a cell?
The basic unit
of life

3. Characteristics of Life
Reproduce
Grow
Exchange gases
Die
Respond to environment
Take in food/produce waste

8. Cell wall- plant cells

10. Neuron  nerve tissue  brain  nervous system  human

11. Video

12. All living things are composed of one or more cells
Cell Theory
All living things are composed of one or more cells
Postulated by Matthias Schleiden & Theodore Schwann

13. Cell Theory
Cells are the basic structural and functional units of life.
Postulated by Matthias Schleiden & Theodore Schwann

14. Cell Theory All cells arise from the division of other cells.
Postulated by Rudolf Virchow

15. Observing Cells It is not easy. So we use microscopes!
Early microscopes allowed scientists to discover cells existed and modern microscopes allow scientists to discover how cells function.

16. The Compound Light Microscope
Micro- small
Scope- to see
Microscope- an instrument used in biology “to see small living things”
Magnification- how much LARGER image is under microscope than in real life
Resolution- how CLEAR image is under microscope

17. Compound Microscope- Label

18. Microscope Video- parts and how to focus