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Microscope Lab

Exercise 4:  Handout

Name: ________________________

Parts of a Microscope

Microscope

 Label the parts of the Microscope

Microscope from: http://www.tissue-cell-culture.com/docs/

 

 

 

 

LAB 3 Tissue and Cell Drawings

Use one letter and 2 prepared slides. Increase the power and draw what you see.

 

low power

___total magnification

medium setting

___total magnification

high setting

____total magnification
1. Letter or Word

__________

  

 

 

 

  

 

  

 
 2.Prepared slide

__________

  

 

 

 

  

 

  

 
 3.Prepared slide

__________

  

 

 

 

  

 

  

 

Cheek Cell Unstained:

Cheek Cell Stained:

Prepare 2 cheek slides. Stain one and do not stain the other. Draw what you see in the marked squares

 

Answer the following questions:

(Complete sentences are not needed)

  1. What total magnification will be achieved if the 10x eyepiece and the 10x objective lens are used? ______________
  2. What is the total magnification if the 40x lens is used instead? ___________
  3. These questions involve looking at the letter or word slide:

    4. a. What has the lens system done to the image of the letter or word? (Is it right side up or upside down) ____________________

    b. When the slide is moved to the right which way does the image move? _____________________________

    c. When the slide is moved to you which way does the image move? _____________________________

    Match the names of the microscope parts in Column B with the descriptions in column A. Write the letter in the in line provided.

                                                                        COLUMN A                                                                             COLUMN B

    _____Increases or decreases the light intensity

    _____Platform that supports the microscope slide

    _____Concentrates light onto specimen

     _____Causes stage to move up or down

    _____After light passes through the specimen it enters this lens

    _____Holds microscope slide into position

    _____Lens at the top of the body tube

    _____Serves as handle for carrying the microscope

    _____Part of which the objective lenses are attached

    _____ Circular area seen through the eyepiece

    		 a. Focus knobs

     b. Arm

    c. Condenser

     d. Ocular

    e. Field of view

    f. Iris diaphragm

    g. Nosepiece

    h. Objective lens

    i. Stage

    j Stage clip

     

 

Trouble Shooting (All answers must be in complete sentences) (2 points each)

1. You increased the total magnification, you are in focus but and your specimen is no longer visible. Describe what happened. ________________________________________________

___________________________________________________________________________

___________________________________________________________________________

2. Your slide is very thin and pale. What should you do? (Getting a new slide is not an option)

___________________________________________________________________________

___________________________________________________________________________

___________________________________________________________________________

3. You put the slide on the stage and all you see is pick. What should you do?

___________________________________________________________________________

___________________________________________________________________________