Question 1

Which part of the compound microscope is responsible for focusing light onto the specimen and is located directly beneath the stage?

Accepted Answer

Condenser

Question 2

What is the function of the coarse adjustment knob on a compound microscope?

Accepted Answer

It moves the stage up and down rapidly to bring the specimen into general focus.

Question 3

Which structure on the microscope is used to change the objective lenses and thus alter the magnification?

Accepted Answer

Revolving nosepiece

Question 4

If you want to increase the clarity and sharpness of the image after using the coarse adjustment knob, which part should you use?

Accepted Answer

Fine adjustment knob

Question 5

Which part of the microscope supports the slide and allows for movement in the X and Y directions for precise positioning?

Accepted Answer

Stage

Question 6

What is the function of the iris diaphragm on a compound microscope?

Accepted Answer

It adjusts the amount of light reaching the specimen.

Question 7

Which part of the microscope should you hold when carrying it to ensure safety and stability?

Accepted Answer

Arm and base

Question 8

What is the primary function of the ocular lens in a compound microscope?

Accepted Answer

To further magnify the image formed by the objective lens

Question 9

Which part of the microscope is responsible for providing illumination to the specimen?

Accepted Answer

Light source

Question 10

If the objective lens is 40x and the ocular lens is 10x, what is the total magnification?

Accepted Answer

$$40 	imes 10 = 400$$

Microbiology Study Guide: Chapters 1–3 Step-by-Step Guidance

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