Understanding Light Microscopes

What is the most common type of microscope used by early microbiologists?

• Scanning probe microscope

• Light or optic microscope

• Ultraviolet microscope

• Electron microscope

What does the diaphragm of a light microscope do?

• It holds the specimen in place

• It controls the contrast by controlling light exposure

• It magnifies the image

• It focuses the light

Which part of the microscope is used for larger adjustments in focus?

• Eyepiece

• Objective lens

• Coarse focus knob

• Fine focus knob

How does the total magnification of a specimen get calculated in a light microscope?

• Objective magnification plus eyepiece magnification

• Eyepiece magnification minus objective magnification

• 10 times the objective magnification

• Objective magnification times eyepiece magnification

What is the purpose of the stage clips on a microscope?

• To adjust the focus

• To control the light intensity

• To magnify the specimen

• To hold the specimen in place

Which type of microscope is often used to study tissue cultures?

• Standard light microscope

• Inverted light microscope

• Digital microscope

• Electron microscope