FREE AND STUDY GAMES ABOUT MICRO EXAM 3 EXAM

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FREE AND STUDY GAMES ABOUT MICRO EXAM 3 EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

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-Guarantee passing score -16 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Which of the following best describes culture density?

Answer:

The number of cells per unit volume Question 2: Which of the following is not a common step in preparing a pour plate to make a count microbial numbers?

Answer:

Bacteria are spread across the agar, using a sterile spreader Question 3: Which type of system is used to maintain bacteria in a relatively constant environment, allowing them to stay in the log phase of growth?

Answer:

Chemostat Question 4: The initial cells added to added to a batch culture are called which of the following?

Answer:

The inoculum

Question 5: Which of the following is an indirect method of measuring numbers of bacterial cells?

Answer:

Turbidity measurements

Question 6: Which of the following is not a reactive oxygen species?

Answer:

atmospheric oxygen

Question 7: Which of the following is another term for generation time?

Answer:

Doubling time

Question 8: Which best defines the term "persisters?"

Answer:

Cells with relatively slow metabolic rates that survive longer than others during the death phase and that can cause chronic infections Question 9: Which structure structure separates new daughter cells in binary fission?

Answer:

The division septum

Question 10: Which of the following best describes FtsZ?

Answer:

The protein that assembles the z ring, which forms a divisome before division by fission

Question 11: Which microbial pathogen has an unusually long doubling time?

Answer:

Mycobacterium leprae Question 12: Which best describes bacterial growth during the log phase of the growth curve?

Answer:

Exponential

Question 13: Which of following is not a common way bacteria divide?

Answer:

Sporulation

Question 14: Which of the following is term for free-living bacteria?

Answer:

Planktonic Question 15: Which of the following best describe why extracellular polymeric substances are important?

Answer:

They are components of a biofilm secreted by the microbes present Question 16: Bacteria most commonly reproduce using which of the following methods?

Answer:

Binary fission