Test Bank for Benson's Microbiological Applications Laboratory Manual, 15th Edition by Heidi Smith

Test Bank – Part 1
1) What two adjustments can be made to the condenser?


A) It can be moved up and down under the stage.
B) It can be adjusted to modify the brightness of the light from the source.
C) Its diaphragm can be opened/closed to regulate amount of light hitting the slide.
D) It can be adjusted to ensure focused, sharp images to both eyes.
E) It can be moved left/right to position the specimen.




2) Maximum resolution can be achieved when using the oil immersion lens by
implementing what procedures?


A) Move the condenser to highest position
B) Increase the light intensity from the source
C) Open the diaphragm fully
D) Lower the condenser to the lowest position
E) Increase the working distance between lens and slide




3) Why is it necessary to use oil when viewing a specimen with the oil immersion lens?
Check all that apply.


A) The oil reduces the diffraction of light.
B) It minimizes the numerical aperture.
C) It improves the resolving power of the microscope.
D) It lubricates the lens to offset the lowered working distance.




4) What should be done before returning a microscope to its storage location? Check all that
apply.




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