The Microscopy Quiz

Match the names of the microscope parts in column A with the descriptions in column B. Place the letter of your choice in the space provided. 1. Objective lens system 2. Stage 3. Iris diaphragm 4. Adjustment knob 5. Condenser

1. After light passes through the specimen, it next enters this lens system 2. Platform that supports a microscope slide 3. Increases or decreases the light intensity 4. Causes stage (or objective lens) to move upward or downward 5. Concentrates light onto the specimen

Match the names of the microscope parts in column A with the descriptions in column B. Place the letter of your choice in the space provided. 1. Nosepiece 2. Stage (slide) clip 3. Arm 4. Field of view 5. Eyepiece (ocular)

1.Part to which the objective lenses are attached 2. Holds a microscope slide in position 3. Serves as a handle for carrying the microscope 4. Circular areas seen through the eyepiece 5. Contains a lens at the top of the body tube

Which objective lens requires oil to be applied?

100x

The magnification of the ocular lens is

10x

Select the letter that matches the person correctly holding the microscope.

C

The arrow is pointing to the

arm

Which part of the microscope will be used first to adjust the focus when starting with the lowest power lens?

coarse focus

Staining cells such that their color is different from the background enhances their

contrast

The fine adjustment knob on the microscope

fine-tunes the focus

When storing the microscope the stage should be left in the ____ position.

fully down

After focusing on an object with the low power objective lens, you are trying to bring it into focus under the 40x objective lens, but the field of view is very dark. Which of the following may remedy this problem?

increase the light intensity

A change in what component of microscopy influences the apparent size of the objects being viewed?

magnification

The lenses of a brightfield microscope are responsible for the _____ of the object you are viewing.

magnification

Which of the following is the process of making an object appear larger?

magnification

The _______ lenses further magnify the image produced by the objective lens.

ocular

The arrows are pointing to the

ocular lenses

Which of the following must be visually studied using microscopy?

prokaryotes

The objective lenses of the compound light microscope are attached to the

rotating nosepiece

Which of the following must be visually studied using electron microscopy?

viruses