1. Catalyst #5: November 17th, 2014
What is the function of ribosomes?
Transport proteins
Store DNA
Destroy waste
Synthesize proteins
What part of the plant cell produces food?
What is the function of mitochondria?
Transport proteins
Produce energy
Synthesize proteins
Destroy waste
Why do plant cells need a cell wall?

2. Agenda Catalyst (5 minutes) **Honors: Bacteria Culture, Day 1
Cell Review Stations (Remaining)
Homework:
DBA #11 THE LAST ONE OF SEMESTER ONE: Due 11/27
Honors Projects: 2 weeks and 4 days

3. Announcements The Cell as a ______________ Mini-Project DBA #10
Dojo review
Discovery letters
Cell quiz
TOMORROW

4. Review Stations Handout
Instructions at each station (Right side versus left side)
Expectations: Your stuff, volume, when you leave a station

5. Catalyst: November 18th, 2014(4 minutes)
Cellular Organelle Quiz
You need a sheet of paper and a quiz
9 questions

6. Quiz Expectations 9 questions Don’t be a derp
Protect your intellectual property!
When you finish…

7. Microscope Notes(15 minutes) Understanding the Microscope (10 minutes)
Agenda
Catalyst (5 minutes)
Microscope Notes(15 minutes)
Understanding the Microscope (10 minutes)
Partner quiz: Remaining
Homework:
Dba #11: 11.27

8. Microscope Notes(15 minutes) Understanding the Microscope (10 minutes)
Agenda: Honors
Catalyst (5 minutes)
Bacteria Cultures, DAY 2
Microscope Notes(15 minutes)
Understanding the Microscope (10 minutes)
Homework:
HP: 2 weeks; three days
DBA #11: 11/27

9. Announcements
Office hours today!
Unit 4 study guide

10. Unit 4: Guiding Questions
What are all living organisms made up of?
What does each part of the cell do?
What different types of cells exist and how are they different?
What tools are used to study the cell?

11. Today’s Objectives
SWBAT determine the type of microscope to be used in a given situation
SWBAT identify and label the most critical components of the microscope
SWBAT calculate the magnification of an object based on the lenses used.

12. The Microscope
Biology

13. Early Microscopes Review– who discovered the cell?
Robert Hooke
English scientist Robert Hooke was one of the first scientists to create and use a microscope

14. Early Microscopes
Another scientist, Anton Van Leeuwenhoek, built a microscope similar to Hooke’s and improved microscope technology in the late 1600s
Known as the “father of microscopy”
Used the microscope to view pond water
I have gorgeous hair.

15. Improvements in Technology
Since the 1600s, the microscope has developed tremendously
These developments have given scientists the ability to study cells in greater detail than ever imagined

16. Modern Microscopes
Key Point 1: There are two main types of microscope commonly used by scientists today
Light microscopes
Electron microscopes

17. Light Microscopes
Light microscopes use a series of glass lenses and visible light to produce a magnified image
Key Point 2: Light microscopes are typically used to view only the basic features of a cell or microorganism
Cell membrane, cytoplasm, nucleus

18. Light Microscope
Scientists often stain cells with dyes to see them better when using a light microscope
The maximum magnification with the light microscope is about 1000x

19. Electron Microscope
Electron microscopes use a magnet to aim a beam of electrons at thin slices of cells
Key Point 3: Electron microscopes are typically used to view the details of cells, such as specific organelles
Mitochondria, ER, Golgi apparatus etc.

20. Electron Microscope

21. Electron Microscope
Only non-living cells and tissues can be used under the electron microscope
Maximum magnification is about 500,000x
Much more powerful than the light microscope

22. Electron Microscope

23. Light vs. Electron Microscopes
Light Microscope:
Older
Imaged formed by light and lenses
Used to view basic structures of cells
Less powerful
1,000x
Electron Microscope:
Newer
Imaged formed by magnets and beams of electrons
Used to view tiny details and structures of cells
Much more powerful
500,000x

24. Parts of the Microscope
To the right is a picture of a light microscope
We will review the function of each part

25. Parts of the Microscope
A: Ocular Lens (Eye Piece)
Used to view sample
Magnifies the image 10x
B: Arm
Used to carry the microscope
C: Objective Lenses
Magnify the image 4x, 10x, or 40x

26. Parts of the Microscope
D: Stage
Holds the microscope slide
E: Coarse Adjustment Knob
Focuses the image
Always used first
F: Fine Adjustment Knob
Focuses the details of the image
Always used second

27. Total Magnification 4x (red) X 10x=40x total magnification
Key Point 4: To calculate the total magnification of a light microscope multiply the power of the ocular lens (10x) by the power of the objective lens (4x, 10x, 40 x or 100x)
4x (red) X 10x=40x total magnification
10x (yellow) X 10x=100x total magnification
40x (blue) X 10x=400x total magnification
100x X 10x=1000x total magnification

28. CFUs: Parts of the Microscope
#1-5: Write the name of the part labeled by the number.
#6: What would be the total magnification of an object if the ocular lens is 10x an the objective lens is 60x?
#7: What type of microscope would be best to use if you wanted to see mitochondria in a cell?
#8: What knob do you always turn first to focus the image?

29. Microscope Partner Quiz
In groups of two or three
Each group gets a microscope (safely handling microscope demo)
Take turns pointing to different parts of the microscope and having your partner name that piece (with no notes!)
When you feel like you have prepared enough, raise your hand.
Ms M. will come and quiz you!