5: Microscopes

What was Pinky hoping to find in the water sample?

• Bacteria

• Fungi

• Euglena and Paramecia

• Viruses

What does the term 'resolution' refer to in microscopy?

• The ability to magnify an image

• The ability to distinguish between two objects

• The ability to change the color of an image

• The ability to focus light on a specimen

Which type of microscope is most commonly found in classrooms?

• Electron microscope

• Phase-contrast microscope

• Brightfield light microscope

• Darkfield light microscope

What is the main difference between a TEM and an SEM?

• TEMs visualize 3D surfaces, SEMs visualize internal structures

• TEMs use light, SEMs use electrons

• TEMs visualize internal structures, SEMs visualize 3D surfaces

• TEMs are used for living specimens, SEMs are not

What is the function of the condenser lens in a brightfield light microscope?

• To magnify the image

• To focus light on the specimen

• To block light from the source

• To adjust the stage height

How do you calculate the total magnification of a compound microscope?

• By adding the magnification of the objective and eyepiece lenses

• By multiplying the magnification of the objective and eyepiece lenses

• By dividing the magnification of the objective lens by the eyepiece lens

• By subtracting the magnification of the eyepiece lens from the objective lens

What is the purpose of the coarse focus knob?

• To change the objective lens

• To move the stage side to side

• To adjust the light intensity

• To move the stage up and down dramatically

What should you use to clean the lens of a microscope?

• Regular tissue

• Water

• A cloth

• Lens paper

What is a wet mount?

• A way to stain a specimen

• A technique to prepare a microscope slide with a liquid sample

• A method to clean the microscope

• A method to dry a specimen

What should you do before putting away a microscope?

• Turn off the light and lower the stage

• Increase the magnification

• Leave the power cord plugged in

• Leave the slide on the stage