PURPLE 1B: Essential Parts of a Compound Microscope

What is the purpose of the ocular lens?

• To move the stage up and down

• To hold down a glass slide

• To adjust the amount of light

• To view the specimen

Which adjustment knob is used ONLY with low power lens (never with the high-power objective)?

• Light source

• Stage clips

• Fine adjustment

• Course adjustment

What is the function of the stage clips?

• To hold down a glass slide

• To adjust the amount of light

• To move the stage up and down

• To view the specimen

What is the purpose of the light source?

• To hold down a glass slide

• To adjust the amount of light

• To move the stage up and down

• To shine light through the specimen

What is the function of the nosepiece?

• To adjust the amount of light

• To rotate between objective lens choices

• To shine light through the specimen

• To hold down a glass slide

What are eyepiece and objective lenses used for?

• To adjust the amount of light that is shining through the specimen.

• The lenses work together to magnify (enlarge) the image of the specimen so that it appears larger to your eye.

• To hold down a glass slide that is holding the specimen in place.

• To rotate between objective lens choices to choose the lens that is best for magnifying the specimen.

What is the purpose of the stage? Select ALL that apply

• A place to hold the slide.

• To rotate between objective lens choices

• To adjust the amount of light

• Has a hole to allow light to pass through the specimen

What is the function of the diaphragm?

• To adjust the amount of light

• To hold down a glass slide

• To rotate between objective lens choices

• To shine light through the specimen

Which scientists use microscopes to examine bacteria that cause infections?

• Forensic Technicians

• Doctors

• Chemists

• Biologists

Which scientists use microscopes to find clues to solve crimes?

• Biologists

• Forensic Technicians

• Chemists

• Doctors