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micro exam 3

QuestionAnswer
Bacteria most commonly reproduce using which of the following methods? Binary fission
Which structure structure separates new daughter cells in binary fission? The division septum
Which of the following is another term for generation time? Doubling time
Which of the following best describes culture density? The number of cells per unit volume
Which of following is not a common way bacteria divide? Sporulation
Which of the following is term for free-living bacteria? Planktonic
Which of the following is not a reactive oxygen species? atmospheric oxygen
Which of the following best describes FtsZ? The protein that assembles the z ring, which forms a divisome before division by fission
Which microbial pathogen has an unusually long doubling time? Mycobacterium leprae
The initial cells added to added to a batch culture are called which of the following? The inoculum
Which best describes bacterial growth during the log phase of the growth curve? Exponential
Which best defines the term "persisters?" Cells with relatively slow metabolic rates that survive longer than others during the death phase and that can cause chronic infections
Which type of system is used to maintain bacteria in a relatively constant environment, allowing them to stay in the log phase of growth? Chemostat
Which of the following is an indirect method of measuring numbers of bacterial cells? Turbidity measurements
Which of the following is not a common step in preparing a pour plate to make a count microbial numbers? Bacteria are spread across the agar, using a sterile spreader
Which of the following best describe why extracellular polymeric substances are important? They are components of a biofilm secreted by the microbes present
Which of the following media is commonly used to determine the oxygen requirements of a bacterial species?
Created by: vdoggg
 

 



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