Microbiology Lab 1
40 Questions
| Attempts: 101
.jpg "Microbiology Lab 1 - Quiz")
Questions and Answers
- 1.
Absence of unwanted microorganisms. (ex. handwashing or cleaning tabletops with bleach)
Correct Answer
asepsis - 2.
Complete absence of all viable and living organisms.
Correct Answer
sterility - 3.
Type of microscope that has 2 eyepieces or occulars; need to do diopter adjustement which focuses the left and right eye in the same plane of vision.
Correct Answer
binocular - 4.
Type of microscope that has 1 eyepiece where one is using only the right or left eye.
Correct Answer
monocular - 5.
Which lens is the diopter adjustment located on?
Correct Answer
left - 6.
By how much do occular lenses magnify by?
Correct Answer
10x
10x's - 7.
Field of view remains in focus when objective moves.
Correct Answer
parfocal - 8.
1 lens system.
Correct Answer
simple - 9.
More than 1 lens systems.
Correct Answer
compound - 10.
What are the three types of monocular lenses?
Correct Answer
ocular,objective,condenser - 11.
What is the function of the ocular lenses?
- A.
Magnify image 10x
- B.
Lens that magnifies the image by 4x, 10x, 40x, 100x
- C.
Focuses the light through specimen into the objective
Correct Answer
A. Magnify image 10x -
- 12.
What is the function of the objective lens?
- A.
Magnify image 10x
- B.
Lens that magnifies the image by 4x,10x,40x,100x
- C.
Focuses the light through specimen into the objective
Correct Answer
B. Lens that magnifies the image by 4x,10x,40x,100x -
- 13.
What is the function of the condenser?
- A.
Magnify image 10x
- B.
Lens that magnifies the image by 4x,10x,40x,100x
- C.
Focuses the light through specimen into the objective
Correct Answer
C. Focuses the light through specimen into the objective -
- 14.
What do we use to clean the tables in lab?
Correct Answer
10% bleach - 15.
What is our bleach solution made with?
Correct Answer
1 part bleach,9 parts water
9 parts water,1 part bleach - 16.
Ocular magnification x objective magnification
Correct Answer
photomagnification - 17.
4x objective lens
Correct Answer
scanning - 18.
10x objective lens
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low power - 19.
40x objective lens
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high dry - 20.
100x objective lens
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oil immersion - 21.
What is the resolution limit in lab?
Correct Answer
0.2 micrometers - 22.
The amount of light captured by the lens. Shorter wavelengths of light increases the resolving power, or clarity. Longer wavelengths of light decreases the resolving power. The longer the length, the more blurry an object.
Correct Answer
numerical aperture - 23.
This functions to bring the specimen into focus quickly and is only used in scanning and low power.
Correct Answer
coarse focus knob - 24.
This functions to bring the specimen into focus slowly and can be used under any power.
Correct Answer
fine focus knob - 25.
1 x 10 ^-2m or 0.01m
Correct Answer
cm - 26.
1 x 10 ^-3m or 0.001m
Correct Answer
mm - 27.
1 x 10 ^-6m or 0.000001m
Correct Answer
micrometers - 28.
1 x 10 ^-9m or 0.000000001m
Correct Answer
nanometers - 29.
1 x 10 ^-10m or 0.0000000001m
Correct Answer
Angstrom - 30.
What measurement is used when looking at bacteria?
Correct Answer
micrometers - 31.
What measurement is used when looking at viruses?
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nanometers - 32.
Resolution=?
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clarity - 33.
Resolving power=?
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measurement - 34.
Convert 1.121 cm to micrometers
Correct Answer
1,121 micrometersExplanation
cm's is larger (1x 10 ^-2) while micrometers is smaller (1x10^-6) with a difference of 4. We move the decimal 4 places to the right.Rate this question:
- 35.
Convert 0.51 Angstons to cm.
Correct Answer
0.0000000051 centimeters
0.0000000051 cm's
0.0000000051 cmExplanation
Angstons are smaller (1x10^-10) while cm are larger (1x10^-2) with a difference of 8. The decimal place is moved 8 places to the left.Rate this question:
- 36.
What does this resemble from what was looked at in lab this week?
Correct Answer
yeast - 37.
What are these known as?
Correct Answer
Erythrocytes
RBC's
Red blood cells - 38.
What is this known as?
Correct Answer
lymphocyte - 39.
What is this known as?
Correct Answer
monocyte - 40.
What is this known as?
Correct Answer
neutrophil
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Aug 25, 2011Quiz Edited by
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Aug 23, 2011Quiz Created by
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