Light Microscope Function And Parts Test

25 Questions | Total Attempts: 538

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Light Microscope Function And Parts Test

Welcome to the electronic Frontier science classroom of the 21st century. Microscopes are tools that extend human vision by making enlarged images of objects. Scientists use microscopes to see very small objects, such as microorganisms, cells and even cell parts like the nucleus, ribosomes, and chloroplasts. This test will aid you in learning the most common parts of a compound light microscope. The magnification of the eyepiece and objectives may change from one brand of microscope to another. When you are presented with a "fill-in" type question on this test and other created by Pulsar_Lincoln education director. Please enter your answer(s) using all lower case letters, unless you are given specific directions at the question site. &n


Questions and Answers
  • 1. 
    The _____ _____ consists of two lens elements, top being removable for low power observations. (It is number 6 on the microscope diagram.)  
    • A. 

      Achromatic Condenser

    • B. 

      Abbe Condenser

    • C. 

      Normal Condenser

    • D. 

      Stage Stop Condenser

  • 2. 
    When using achromatic objectives designed to bring which two of the following parts of the visible spectrum into the same focus.  (Please check only a total of two (2) answers.)
    • A. 

      Blue

    • B. 

      Green

    • C. 

      White

    • D. 

      Red

    • E. 

      Black

  • 3. 
    What is the common magnification of the eyepiece on the basic compound light microscope used in your biology laboratory?
    • A. 

      5 X

    • B. 

      10 X

    • C. 

      20 X

    • D. 

      30 X

  • 4. 
    What color band is located on the scanning objective lens on our classroom compound light microscopes?  (Please enter your answer(s) using all lower case letters.)
  • 5. 
    A(n) _____ is the main vertical section supporting the microscope called.
    • A. 

      Arm

    • B. 

      Base

    • C. 

      Disc Diaphragm

    • D. 

      Microscope Stage

  • 6. 
    The high power objective of your compound light microscope has a magnification of 40X. The total magnification of this microscope is 400X and has an ocular of 10X
    • A. 

      True

    • B. 

      False

  • 7. 
    An instrument fitted with an ocular, low-power objective, high-power objective and a light source. Which microscope is being described?
    • A. 

      Electron Microscope

    • B. 

      Light (compound) Microscope

    • C. 

      Scanning Electron Microscope

    • D. 

      Transmission Electron Microscope

  • 8. 
    As the power of magnification increases, the depth of field _____ for any given microscope.
    • A. 

      Decreases

    • B. 

      Depends on the amount of light passing through specimen

    • C. 

      Equals the total magnification

    • D. 

      Increases

  • 9. 
    The eyepiece or ocular is the lens which is closest to the human eye for viewing of the specimen.
    • A. 

      True

    • B. 

      False

  • 10. 
    The _____  lens is the shortest of the objective lens with a red colored band. (Note: this is not a research microscope.)  
    • A. 

      Scanning Power Objective Lens

    • B. 

      Oil - Immersion Objective Lens

    • C. 

      Low Power Objective Lens

    • D. 

      High Power Objective Lens

  • 11. 
    The field of view is the power of the ocular   +  the distance of the light source to the specimen in millimeters.
    • A. 

      True

    • B. 

      False

  • 12. 
    This compound light microscope part moves the body tube up and down in large increments to allow gross positioning and focusing of the objective.
    • A. 

      Iris Diaphargm

    • B. 

      Fine Adjustment

    • C. 

      Coarse Adjustment

  • 13. 
    What structure is located between the ocular and the revolving turret of your compound light microscope?
    • A. 

      Base

    • B. 

      Body Tube

    • C. 

      Microscope Slide Clips

  • 14. 
    What part of the compound light microscope moves the body tube slightly to bring the image into sharp focus?
    • A. 

      Coarse Adjustment Knob

    • B. 

      Fine Adjustment Knob

    • C. 

      Basic Adjustment Knob

  • 15. 
    _____ is the number of times that a microscopic image appears larger than the original specimen.  
  • 16. 
    What compound light microscope part is the rotating device that holds the objectives to the microscope body tube?
    • A. 

      Iris Diaphragm

    • B. 

      Revolving Nose piece

    • C. 

      Illuminator (light source)

    • D. 

      Motor-driven nose piece

  • 17. 
    A turret is another name assigned to the revolving nosepiece.  
    • A. 

      True

    • B. 

      False

  • 18. 
    The _____ is located opposite of the eyepiece and the supports the weight of the microscope.  (Please enter your answer(s) in all lower case letters.)  
  • 19. 
    _____ is the ability to distinguish and separate one small structure from another.
    • A. 

      Magnification

    • B. 

      Resolution

    • C. 

      Working Distance

  • 20. 
    The distance between the front end of the objective lens and the specimen, when in sharp focus is called?  
    • A. 

      Active distance

    • B. 

      Objective distance

    • C. 

      Working distance

  • 21. 
    What is the thick substance used to create a permanent microscope slide of a specimen?
    • A. 

      British Balsam

    • B. 

      Canada Balsam

    • C. 

      United States Balsam

    • D. 

      European Olive Oil

  • 22. 
    The _____ _____ is a device with 5 or 6 different sized holes. It is used to control the amount of light passing through the specimen.
    • A. 

      Microscope stage

    • B. 

      Multiple orifice

    • C. 

      Disc diaphragm

    • D. 

      Light source diaphragm

  • 23. 
    What is the vertical distance that can be sharply focused on a specimen called?
    • A. 

      Field of Vision

    • B. 

      Depth of Vision

    • C. 

      Depth of Field

    • D. 

      Resolution

  • 24. 
    What color band is found on the longest or  high power objective lens on our class compound light microscopes? (Note: this question relates to Science Kit microscopes.)
    • A. 

      Blue

    • B. 

      Red

    • C. 

      Yellow

    • D. 

      Green

  • 25. 
    What is the field of view in microns if you can observe 5.6 millimeters? (Please enter your answer with a number between 500 and 9 000 microns. Do not add any units to your answer!)
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