The Microscope
3. Each of the following statements is either true or false. If true, write 7 on the answer blank. If false, correct the statement by
writing on the blank the proper word or phrase to replace the one that is underlined.
1. The microscope lens may be cleaned with any soft tissue.
2. The microscope should be stored with the oil immersion lens in position over the stage.
3. When beginning to focus, use the scanning objective lens.
4. When focusing on high power, always use the coarse adjustment knob to focus.
5. A coverslip should always be used with wet mounts.
4. Match the microscope structures in column B with the statements in column A that identify or describe them.
Column A
1. platform on which the slide rests for viewing
2. used to adjust the amount of light passing through
the specimen
3. controls the movement of the slide on the stage
4. delivers a concentrated beam of light to the specimen
5. used for precise focusing once initial focusing has
been done
6. carries the objective lenses, rotates so that the differ-
ent objective lenses can be brought into position over
the specimena.
5. Define the following terms.
total magnification:
resolution:
Viewing Objects Through the Microscope
6. Complete, or respond to, the following statements:
1. The distance from the bottom of the objective lens to the surface of the slide is called
the
2. Assume there is an object on the left side of the field that you want to bring to the center
(that is, toward the apparent right). In what direction would you move your slide?,
3. The area of the slide seen when looking through the microscope is the
4. If a microscope has a 10x ocular lens and the total magnification is 950x, the objective lens in
use at that time is
X.
Column B
a. coarse adjustment knob
b. condenser
c. fine adjustment knob
d. iris diaphragm lever
e. mechanical stage
f. nosepiece
g. objective lenses
h. ocular lens
i. stage
