Microbiology Quiz Ch. 1 and Microscopes
1. The two large cells in this micrograph are classified as eukaryotic cells because
a.
b.
c.
d.
they are stained a particular color
they do not have a cell wall.
they have a nucleus.
they are much larger than the other cells.
2. A microorganism has the following characteristics: eukaryotic, multicellular, has cell walls, and grows in long
filaments. What is its general classification?
a. Protozoan
b. Bacterium
c. Fungus
d. Parasitic worm
3. Which of the following is NOT a characteristic of viruses?
a.
b.
c.
d.
they are obligatory parasites.
they are smaller than prokaryotic cells.
they are visible with a light microscope.
they are acellular.
4. Which of the following is an incorrect pairing?
a.
b.
c.
d.
algae: photosynthetic
protozoa: multicellular
fungi: cell walls
prokaryotes: no nuclei
5. Martin is a nurse in Chicago. Every summer, he spends a few weeks in Africa volunteering in a rural village in
Zambia. During the last week of Martin's most recent Africa trip, torrential rains hit the country, causing flash
floods and extensive damage to the village. Despite the conditions, Martin manages to return to Chicago on
schedule. A day later, he begins experiencing diarrhea. At first, he brushes it off as "traveler's diarrhea," which
can be caused by a change in diet and usually goes away quickly. However, over the following days, Martin's
symptoms worsen.
The organisms infecting Martin are unicellular and do not have a nucleus. They are extremely small but can be
seen with a light microscope when stained. Which of the following categories of microorganisms would they be
classified in?
a. Fungi
b. Protozoa
c. Bacteria
d. Algae
Match the term with the proper component of the microscope.
a. Stage
b. Objective lens
c. Course adjustment knob
d. Condenser
e. Fine adjustment knob
6.
7
6.
.
8.
9.
10.
6.
.
11. If an objective lens has a magnification of 40X and the ocular lens has a magnification of 10X, then what is
the total magnification?
a. 40x
b. 400x
c. 4000x
d. 100x
12. In order to increase the resolving power, you can
a. shorten the wavelength
b. lengthen the wavelength
c. decrease the numerical aperture
d. refocus the microscope
13. In order to view the most number of cells under the microscope, the ___________ objective lens should be
used
a. Scanning
b. Low-power
c. High-power
d. Oil immersion
14. This part of the microscope controls the amount of light entering the condenser.
a. Illuminator
b. Course adjustment knob
c. Ocular lens
d. Diaphragm
15. A microscope that maintains focus when the objective magnification is increased is called
a. refractive index
b. parfocal
c. binocular
d. inversion
16. The course and fine adjustment knobs adjust the distance between
a. the objective and ocular lenses
b. the ocular lenses
c. the ocular lenses and your eyes
d. the stage and the objective lens