BIOL 2121 - Final Exam Review Questions
With Correct Answers
Descriptions of colony elevation - CORRECT ANSWER✔✔-Flat, convex,
| | | | | | | |
or raised
|
A motile bacterium might exhibit this in liquid culture - CORRECT
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ANSWER✔✔-Uniform fine turbidity | |
Bacterial type forming a thick floating mass of cells on the surface of a
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liquid culture - CORRECT ANSWER✔✔-pellicle growth
| | | | |
Mass of bacterial cells settling at the bottom of a liquid culture tube -
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CORRECT ANSWER✔✔-sediment |
The fact that microorganisms are ubiquitous means that they ...
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a. are all disease causing
| | | |
b. are found almost everywhere on Earth
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c. exist in pure culture in nature
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d. are found only in certain specialized habitats on Earth
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,e. all the above - CORRECT ANSWER✔✔-b. are found almost
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everywhere on Earth | |
When growing bacteria, the choice of solid media (agar slant or agar
| | | | | | | | | | | |
plate) or liquid media depends on what you wish to accomplish; each of
| | | | | | | | | | | | |
the three types is best suited for a particular purpose. Evaluate the
| | | | | | | | | | | |
following and choose the one which is incorrect; i.e., the medium type
| | | | | | | | | | | |
does not match its correct function.
| | | | |
a. best for pure culture determination: solid - agar slant medium
| | | | | | | | | |
b. best for obtaining/harvesting lots of cells: liquid medium
| | | | | | | |
c. best for obtaining isolated colonies: solid - agar plate medium
| | | | | | | | | |
d. best for growth studies or DNA/protein isolation: liquid medium -
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CORRECT ANSWER✔✔-a. best for pure culture determination: solid -
| | | | | | | | |
agar slant medium
| |
Colony size, color, and shape are important factors used to describe
| | | | | | | | | | |
bacterial growth. What other physical factor should be included in the
| | | | | | | | | | |
description since it can influence the growth characteristics? - CORRECT
| | | | | | | | | |
ANSWER✔✔-Incubation temperature |
Duration of incubation | |
Type of growth medium used
| | | |
match:
, a. Scanning objective lens
| | |
b. controls the amount of light entering the lens system of a microscope
| | | | | | | | | | | |
c. It has a numerical aperture value that contributes to resolution.
| | | | | | | | | |
d. 100X objective lens
| | |
1. condenser lens
| |
2. ocular lens
| |
3. microscope stage
| |
4. iris diaphragm
| |
5. typically has the lowest magnification setting
| | | | | |
6. use with immersion oil - CORRECT ANSWER✔✔-a:5
| | | | | | |
b:4
c:1
d:6
100X objective lensWhich statement is true regarding prokaryotic cells,
| | | | | | | | |
eukaryotic cells, and viruses? | | |
a. There are two major taxonomic groupings (domains) of prokaryotes.
| | | | | | | | |
b. You would expect the size of Coronavirus to be in the 1 to 10
| | | | | | | | | | | | | | |
micrometer range. |
With Correct Answers
Descriptions of colony elevation - CORRECT ANSWER✔✔-Flat, convex,
| | | | | | | |
or raised
|
A motile bacterium might exhibit this in liquid culture - CORRECT
| | | | | | | | | | |
ANSWER✔✔-Uniform fine turbidity | |
Bacterial type forming a thick floating mass of cells on the surface of a
| | | | | | | | | | | | | |
liquid culture - CORRECT ANSWER✔✔-pellicle growth
| | | | |
Mass of bacterial cells settling at the bottom of a liquid culture tube -
| | | | | | | | | | | | | |
CORRECT ANSWER✔✔-sediment |
The fact that microorganisms are ubiquitous means that they ...
| | | | | | | | |
a. are all disease causing
| | | |
b. are found almost everywhere on Earth
| | | | | |
c. exist in pure culture in nature
| | | | | |
d. are found only in certain specialized habitats on Earth
| | | | | | | | |
,e. all the above - CORRECT ANSWER✔✔-b. are found almost
| | | | | | | | | |
everywhere on Earth | |
When growing bacteria, the choice of solid media (agar slant or agar
| | | | | | | | | | | |
plate) or liquid media depends on what you wish to accomplish; each of
| | | | | | | | | | | | |
the three types is best suited for a particular purpose. Evaluate the
| | | | | | | | | | | |
following and choose the one which is incorrect; i.e., the medium type
| | | | | | | | | | | |
does not match its correct function.
| | | | |
a. best for pure culture determination: solid - agar slant medium
| | | | | | | | | |
b. best for obtaining/harvesting lots of cells: liquid medium
| | | | | | | |
c. best for obtaining isolated colonies: solid - agar plate medium
| | | | | | | | | |
d. best for growth studies or DNA/protein isolation: liquid medium -
| | | | | | | | | | |
CORRECT ANSWER✔✔-a. best for pure culture determination: solid -
| | | | | | | | |
agar slant medium
| |
Colony size, color, and shape are important factors used to describe
| | | | | | | | | | |
bacterial growth. What other physical factor should be included in the
| | | | | | | | | | |
description since it can influence the growth characteristics? - CORRECT
| | | | | | | | | |
ANSWER✔✔-Incubation temperature |
Duration of incubation | |
Type of growth medium used
| | | |
match:
, a. Scanning objective lens
| | |
b. controls the amount of light entering the lens system of a microscope
| | | | | | | | | | | |
c. It has a numerical aperture value that contributes to resolution.
| | | | | | | | | |
d. 100X objective lens
| | |
1. condenser lens
| |
2. ocular lens
| |
3. microscope stage
| |
4. iris diaphragm
| |
5. typically has the lowest magnification setting
| | | | | |
6. use with immersion oil - CORRECT ANSWER✔✔-a:5
| | | | | | |
b:4
c:1
d:6
100X objective lensWhich statement is true regarding prokaryotic cells,
| | | | | | | | |
eukaryotic cells, and viruses? | | |
a. There are two major taxonomic groupings (domains) of prokaryotes.
| | | | | | | | |
b. You would expect the size of Coronavirus to be in the 1 to 10
| | | | | | | | | | | | | | |
micrometer range. |
