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Microbiology: Chapter 7

35 Questions  I  By Kaiello
Microbiology Quizzes & Trivia

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