1. Cycling of Matter in Living Systems

2. Biology What is cell Theory? How did Cell Theory Develop?
What was the effect upon the Idea of “Spontaneous Generation” ?

3. Walkerton Tragedy
E. Coli Bacteria
Strains found in the intestines of warm blooded mammals
Gram negative

4. Cells and Microscopy

5. Microscopes
Today’s Microscope
Pg 478

6. How Microscopes Work Objective Lens bends light Eyepiece lens
Refraction
Forms larger image
Eyepiece lens
Focuses image for eye

7. The Development of Cell Theory

8. Cell Theory and Microscopy

9. Cell Theory

10. Working Cells

11. Development of Theory

12. Development

13. Cell Theory

14. The Cell Theory All organisms are of composed of one or more cells
The cell is the smallest functional unit of life
All cells are produced from other cells
Life begets life – rejection of spontaneous generation

15. Recap of Cells

16. Cells Designed for Specific Tasks
Specialization

17. Relationships Between Organisms

18. Plant and Animal Cell Structure

19. October 8 Quiz What are the three components of cell theory?
What is “Spontaneous Generation?”

20. Our Day Learn about Microscopes How they work
What are Contrast and Resolution
How do Scientists work to increase these

21. Using a Microscope

22. Microscopes
Today’s Microscope
Pg 478

23. Field Diameter Page 479 of the text
The relationship between magnification and field diameter is inversely proportional

24. Activity
Calculate the field diameter of you microsope at various powers
Measure the diameter of the window at low power
Measure the diameter of the window at higher power
Calculation

25. Contrast Techniques Bright Field Techniques (what we use)
The human eye requires 10-20% differential in transmitted light to recognize details
Different portions of the cell absorb more or less light, refract light differently etc.
Stain: Portions of cell take up more stain than other parts dependent upon chemical composition

26. Optical Contrasting
Is what allows us to see the parts of what we are looking at

27. Electron Microscopes
Resolution
1 nm

28. Resolution The ability to tell the difference between two points
Optical microscopes in the news

29. Drawing Scientific Diagrams
Give a title – name to the diagram
Use a pencil – no color
Label the parts or structures in the diagram
Record the scale of the drawing or magnification level the drawing was viewed under.

30. Microscopes and Materials
Paper
Plastic
Receipt Paper
Other material
Slide of microrganism

31. Parts of the cell

32. Animal Cell

33. Oct 10, 2014

34. Wet Mount

35. Staining a Slide

36. Parts of a Cell (Which one)

37. Which one is this?