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Microbiology: Chapter 7

35 Questions  I  By Kaiello
Microbiology Quizzes & Trivia

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