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MCQs

Total Questions : 146 | Page 15 of 15 pages
Question 141. . The air riser is located on the outside of the draft tube for the large-scale airlift bioreactors because of
  1.    higher oxygen transfer rates
  2.    a small sparge ring
  3.    better heat transfer efficiencies
  4.    all of these
 Discuss Question
Answer: Option C. -> better heat transfer efficiencies
Question 142. . At the end of the lag phase, when growth begins, the division rate increases gradually and reaches a maximum value in the exponential growth period. This transitional period is commonly called the accelerated growth phase and is often included as a part of the
  1.    lag phase
  2.    stationary phase
  3.    death phase
  4.    exponential growth phase
 Discuss Question
Answer: Option A. -> lag phase
Question 143. . Which of the following(s) is/are considered the limitations of the exponential growth model?
  1.    Only predicts that cells grow exponentially during the log phase
  2.    It does not consider factors that causes cells growth to stop or slow
  3.    Predicts cell growth at a linear rate
  4.    All of the above
 Discuss Question
Answer: Option B. -> It does not consider factors that causes cells growth to stop or slow
Question 144. . To describe components of an airlift bioreactor which of the follow-ings are generally included?
  1.    Disengagement zone, air riser, downcomer
  2.    Flotsam, jetsam, downzone
  3.    Air comer, disentanglement zone, downsizer
  4.    All of the above
 Discuss Question
Answer: Option A. -> Disengagement zone, air riser, downcomer
Question 145. . Which of the following(s) is/are considered the limitations of the exponential growth model?
  1.    Only predicts that cells grow exponentially during the log phase
  2.    It does not consider factors that causes cells growth to stop or slow
  3.    Predicts cell growth at a linear rate
  4.    All of the above
 Discuss Question
Answer: Option B. -> It does not consider factors that causes cells growth to stop or slow
Question 146. . To describe components of an airlift bioreactor which of the follow-ings are generally included?
  1.    Disengagement zone, air riser, downcomer
  2.    Flotsam, jetsam, downzone
  3.    Air comer, disentanglement zone, downsizer
  4.    All of the above
 Discuss Question
Answer: Option A. -> Disengagement zone, air riser, downcomer

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