UNIT 1-Module 2-Ch4_ Dynamics of Prokaryotic Cell Structure Review Questions.pdf

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UNIT 1-Module 2-Ch4_ Dynamics of Prokaryotic Cell Structure Review Questions.pdf

5 .   A microorganism that grows in the presence of oxygen when it is available but can also grow without oxygen is 1 . A method that counts only live microbes is the :
A. pure culture method
B. plate count method
C. cell counting method
D. turbidity method
E. none of these are correct
A. microaerophilic
B. aerobic
C. aerotolerant anaerobe
D. facultative anaerobe
E. none of the choices are correct
1 .   A method that counts only live microbes is the :
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2 .   Isolating a pure microbial culture from a mixed culture can be best accompanied by the : 6 . When organisms use oxygen in aerobic respiration , helpful derivatives called reactive oxygen species form as by -products
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7 .   Organisms that require organic compounds for a carbon and energy source are called 3 . The problem with using gelatin as a solidifying agent for microbiological media that :
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3 .   The problem with using gelatin as a solidifying agent for microbiological media that :
A . many organisms can degrade protein
B . gelatin may not remain solid at temperatures required for microbial growth
C . gelatin is not stable during sterilization procedures
D . gelatin liquefied at warm temperatures
E . all of the above are correct
Answer:  E.   all of the above are correct
8 .   Cobalt , zinc , copper and manganese are examples of :
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4 .   A microorganism isolated from the Arctic region would most likely be :
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9 .   An organism is cultured in media containing hydrogen sulfide and carbon dioxide as the only sources for energy and carbon . This would be : 13 . The growth phase in which cells are adapting to new growth conditions is termed :
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13 .   The growth phase in which cells are adapting to new growth conditions is termed :
A . lag
B . log
C . stationary
D . death
E . prolonged decline
14 .   Selective media is used to isolate specific organism or group of organisms .
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10 .   Which of the following statements is FALSE ?
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15 .   A chemostat is used to :
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16 .   What are the extracellular polymeric substances ?
A. method used for estimating the concentration of cells in a specimen
B. a meshlike accumulation of polymers that give biofilms a slimy appearance
11 .   Differential media contain an ingredient that certain microbes can change in a recognizable way .
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12 .   When the number of cells in a culture increases exponentially , the phase of the culture cycle is termed :
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17 .   The Most Probable Number ( MPN ) method of determining cell numbers is based on : 21 . A bacterial culture maintained under complete anaerobic conditions accidentally develops a leak allowing oxygen into the chamber , However , the bacteria continue to grow . The bacteria are most likely :
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21 .   A bacterial culture maintained under complete anaerobic conditions accidentally develops a leak allowing oxygen into the chamber , However , the bacteria continue to grow . The bacteria are most likely :
A . thermophiles
B . halophiles
C . aerobic
D . aerotolerant anaerobes
E . microaerophilic
18 .   The majority of bacterial infections are linked to biofilms :
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22 .   A scientist wishes to monitor the growth and health of a bacterial culture by measuring ATP production . Which of the following would she most likely use to measure ATP ? 19 . During which phase ( s ) of culture growth are the number of newly formed cells approximately equal to the number of dying cells ?
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19 .   During which phase (s) of culture growth are the number of newly formed cells approximately equal to the number of dying cells ?
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20 .   While many microbes are inhibited by high concentrations of salt , some can withstand or even require it . Which term would be best used to describe organisms that require approximately 2 % of sodium chloride . 23 . Tomato sauce has a p H of 5 . A scientist isolates several types of bacteria that cause spoilage of tomato sauce . Which growth condition would be most appropriate to maintain these bacteria in culture ?
A. halotolerant
B. halophiles
A. acidic
B. alkaline
C. extreme halophiles
D. heterotrophs
E. autotrophs
C. hyperosmotic
D. neutral p H
E. microaerobic
23 .   Tomato sauce has a pH of 5 . A scientist isolates several types of bacteria that cause spoilage of tomato sauce . Which growth condition would be most appropriate to maintain these bacteria in culture ?
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Chemistry for Today: General, Organic, and Biochemistry
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Chapter 3 / Exercise 3.56
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UNIT 1-Module 2-Ch4: Dynamics of Prokaryotic Cell Structure Review Questions 1 1. A method that counts only live microbes is the: the presence of oxygen when it is available but can also grow without oxygen is A. pure culture method B. plate count method C. cell counting method D. turbidity method E. none of these are correct 2. Isolating a pure microbial culture from a mixed culture can be best accompanied by the: aerobic respiration, helpful derivatives called reactive oxygen species form as by-products 3. The problem with using gelatin as a solidifying agent for microbiological media that: compounds for a carbon and energy source are called B. trace elements C. vital proteins to a cell D. growth factors E. none of the above 4. A microorganism isolated from the Arctic region would most likely be: A. mesophile B. facultative anaerobe C. psychrophile D. extremophilic E. psychrotroph 5. A microorganism that grows in the presence of oxygen when it is available but can also grow without oxygen is 6. When organisms use oxygen in aerobic respiration, helpful derivatives called reactive oxygen species form as by-products 7. Organisms that require organic compounds for a carbon and energy source are called 8. Cobalt, zinc, copper and manganese are examples of: A. major elements B. trace elements C. vital proteins to a cell D. growth factors E. none of the above
We have textbook solutions for you!
The document you are viewing contains questions related to this textbook.
Chemistry for Today: General, Organic, and Biochemistry
The document you are viewing contains questions related to this textbook.
Chapter 3 / Exercise 3.56
Chemistry for Today: General, Organic, and Biochemistry
Seager/Slabaugh
Expert Verified
UNIT 1-Module 2-Ch4: Dynamics of Prokaryotic Cell Structure Review Questions 9. An organism is cultured in media containing hydrogen sulfide and carbon dioxide as the only sources for energy and carbon. This would be:
2
10. Which of the following statements is FALSE?
B. The generation time of bacteria may vary from species to species C. Bacteria divide by binary fission, producing two daughter cells D. Secondary metabolites are normally produced during late log phase E. In the lag phase, cells increase the number of ribosomes they contain
11. Differential media contain an ingredient that certain microbes can change in a recognizable way. A. True B. False

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