1. Topic: Microscope
Aim: Describe the structure of the compound microscope.
Do Now:
Take out Cell Transport Review #2 ISA
Take out your microscope notes.
HW: Castle Learning – Cell Respiration and Transport  Due Friday

2. A normal picture of a bluebottle fly maggot
A normal picture of a bluebottle fly maggot. But a magnified view looks very different…

4. For every one human being on Earth, there are almost 2 million ants.

5. The clawed tip of an adult fig-eater beetle's leg

6. Pollen from a variety of plants (sunflower, morning glory, holleyhock, lily, primrose and caster bean).

7. A side view of a moth’s head.

8. A breast cancer cell that shows the overall shape of the cell's surface at a very high magnification.

11. Blood

12. Cheek Cells 40x

13. Onion Cells 10x

15. Eyepiece
Ocular (usually 10x)
Lens you look through

16. Body Tube
Connects eyepiece to nosepiece

18. Objective lenses
Contains lenses
Low, medium, high power

20. Scanning objective Low power objective High power objective
Which objective provides the larger field of view? Low or high power? Support your answer.
Low power because it has a LARGER field of view.
2. Which objective is used when searching for the specimen on a slide?
3. Which objective makes the image appear larger?
High power

21. A B Low Power High Power LARGER Field of view Smaller Field of View
Used when trying to locate specimen on the slide
High Power
Smaller Field of View
More magnification

22. In the space at the bottom of the sheet:
Low power objective:
Gives a larger field of view
High power objective:
Magnifies image to provide a larger image

24. Nosepiece
Holds & rotates obj. lenses
Nosepiece

27. Arm
Supports microscope when carried

29. Base
Support

30. One hand holds the arm. The other hand is under the base.
How must you ALWAYS carry a microscope???
One hand holds the arm. The other hand is under the base.

32. Stage
Where slide is placed

33. Stage Clips
Hold slide in place

35. Light Source
Illuminates specimen, provides light

38. Diaphragm
Controls the AMOUNT of light used

41. Darker under high power
Low Power
Brighter
High Power
Darker
Darker under high power

43. Coarse Adjustment Knob
Larger focusing knob

44. Moves stage up and down for focusing
For LOW POWER ONLY

47. Moves the stage slightly to sharpen the image Focus under high power
Fine Adjustment Knob
Moves the stage slightly to sharpen the image
Focus under high power

48. Let’s summarize…Identify the microscope part described.
Used to focus the specimen under high power.
Adjusts the amount of light reaching the specimen.
Platform slide is placed on.
Objective used to view a larger field of view needed to search for a specimen.
Used to focus specimen under low power
Structure that you look through.
Contains lenses.
Keeps slide in place.
Objective used to view a larger and more magnified view of the specimen.
Objective used to search for a specimen.
Fine adjustment
Diaphragm
Stage
Low power objective
Coarse adjustment
Ocular
Ocular and objectives
Stage clips
High power objective
Scanning obj.