Microbiology Ch. 6/7
Quiz
•
Physics
•
University
•
Practice Problem
•
Easy
Kate Blankenship
Used 7+ times
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86 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The addition of which of the following to a culture medium will neutralize acids?
Buffers
Sugars
Carbon
Heat
pH
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which enzyme catalyzes the reaction: H2O2 + 2H+ --> 2H2O?
Superoxide dismutase
Oxidase
Catalase
Peroxidase
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Most bacteria grow best at pH
9.
5.
1.
7.
14.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following pairs is mismatched?
Mesophile - growth at 25°C
Psychrotroph - growth at 0°C
Hyperthermophiles - growth at 100°C
Thermophile - growth at 37°C
Psychrophile - growth at 15°C
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Salts and sugars work to preserve foods by creating a
Hypotonic environment.
Lower osmotic pressure.
Depletion of nutrients.
Lower pH.
Hypertonic environment.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Three cells with generation times of 30 minutes are inoculated into a culture medium. How many cells are there after 5 hours?
48
1024
243
3 x 2^10
16
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Patients with indwelling catheters are susceptible to infections because
Biofilms develop on catheters.
Injected solutions are contaminated.
Their immune systems are weakened.
Bacteria cause infections.
Infections can be transmitted from other people.
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