Question 1

Which part of the microscope is responsible for holding the slide in place during observation?

Accepted Answer

Stage clip

Question 2

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

Accepted Answer

To make large changes in focus for initial specimen location

Question 3

If you are using a 10× ocular lens and a 40× objective lens, what is the total magnification?

Accepted Answer

$$10 	imes 40 = 400$$

Question 4

Which part of the microscope adjusts the amount of light that reaches the specimen?

Accepted Answer

Diaphragm

Question 5

What is the main function of the condenser in a microscope?

Accepted Answer

To focus light onto the specimen

Question 6

Which part of the microscope should you use to make fine, precise adjustments to the focus?

Accepted Answer

Fine adjustment knob

Question 7

What is the purpose of the oil used in oil immersion microscopy?

Accepted Answer

To reduce light refraction and improve resolution

Question 8

Which part of the microscope is used to change between different objective lenses?

Accepted Answer

Nose piece

Question 9

What is the function of the arm (carrying handle) on a microscope?

Accepted Answer

To support the microscope and provide a place to hold it when carrying

Question 10

Which part of the microscope provides illumination for viewing the specimen?

Accepted Answer

Illuminator (light source)

Question 11

If the ocular lens is 15× and the objective lens is 10×, what is the total magnification?

Accepted Answer

$$15 	imes 10 = 150$$

Question 12

Which part of the microscope is used to move the slide smoothly in the X and Y directions?

Accepted Answer

Stage control knobs

Question 13

What is the main function of the base of the microscope?

Accepted Answer

To support and stabilize the microscope

Question 14

Which part of the microscope do you look through to observe the specimen?

Accepted Answer

Ocular lens (eyepiece)

Question 15

What is the function of the aperture on a microscope?

Accepted Answer

To allow light to pass through the specimen

Microbiology Foundations: History, Cell Types, Microscopy, and Lab Techniques

Study Guide - Practice Questions