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Microbiology: Chapter 7

35 Questions  I  By Kaiello
Microbiology Quizzes & Trivia

  
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1.  May use oxygen if present, but can exist without it (fermentation). This is an
A.
B.
C.
D.
E.
2.  Halophiles are a type of bacteria that can exist in this type of condition. 
A.
B.
C.
3.  This phase has exponential growth. 
A.
B.
C.
D.
4.  This chemical requirement, phosphorous, is taken in with inorganic phosphate (PO4^(-3)) 
A.
B.
C.
5.  Which of these words describes when a cell is in its highest temperate environment in which it can still grow?
A.
B.
C.
6.  Like all organisms, bacteria have both ______ and _______ requirements if they are to grow 
7.  Cannot tolerate oxygen. This is an example of 
A.
B.
C.
D.
E.
8.  Which of these words describes when a cell is in its lowest possible temperate environment in which it can still grow?
A.
B.
C.
9.  Which are the only two types of bacteria that humans come into contact with normally?
A.
B.
C.
D.
10.  Can cold kill bacteria?
A.
B.
11.  This phase has an exponential decline.
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B.
C.
D.
12.  Optimal temperatures are 50-60 degrees C, and range from 40-70. 
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B.
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D.
E.
13.  Can grow at 0 degress C, optimum is about 20-30 degrees. Most important with food spoilage. 
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B.
C.
D.
E.
14.  In order to determine the number of bacterial cells present we must serially dilute the sample, and plate the dilution until a countable plate is reached. Then, count the colonies and multiply by the dilution factor. 
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B.
15.  CULTURE MEDIA: Liquid
A.
B.
16.  Optimum temperatures are 80 degrees C or greater (usually archea). Found in volcanoes 
A.
B.
C.
D.
E.
17.  This phase of growth has little growth, and high metabolic activity. 
A.
B.
C.
D.
18.  Peroxidase is an enzyme that aids in the conversion of which of these? 
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B.
C.
19.  Bacteria divide by which of the following?
A.
B.
C.
20.  The chemical need for atmospheric nitrogen (N2) is normally found within
A.
B.
C.
21.  The need for oxygen to live is an....
A.
B.
C.
D.
E.
22.  Superoxide dismutase is an enzyme that helps the conversion of which of these?
A.
B.
C.
23.  In this phase the number of cells remains the same, because the rate of death equals the rate of growth. 
A.
B.
C.
D.
24.  Catalase is an enzyme that aids in the conversion of which of these?
A.
B.
C.
25.  Optimal temperatures of 35-40 degrees C, range 10-50. They are the most common, most pathogens are this type. 
A.
B.
C.
D.
E.
26.  Most bacteria thrive in a neutral pH, some are called acidophiles whose optimal pH can be as low as what?
A.
B.
C.
D.
27.  Bacterial cells grow how?
A.
B.
C.
28.  Need oxygen, but only will grow under low oxygen concentrations (soil, water) 
A.
B.
C.
D.
E.
29.  Growth usually refers to the increase in which of these
A.
B.
30.  Will not use oxygen, but it wont kill them. This is an...
A.
B.
C.
D.
E.
31.  Generation time is the time it takes for one cell to become 
A.
B.
C.
32.  The chemical need for ammonia, nitrate, or nitrite is found within 
A.
B.
C.
33.  CULTURE MEDIA: Solid 
A.
B.
34.  Can grow at 0 degrees C, optimum at <15 degrees. Are considered obligate with respect to cold. Live normally in arctic conditions. 
A.
B.
C.
D.
E.
35.  Which of these words describes when a cell is in an environment of its "best growth"
A.
B.
C.
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