31. Which of the following(s) is/are considered the limitations of the exponential growth model?

A. Only predicts that cells grow exponentially during the log phase
B. It does not consider factors that cause cells growth to stop or slow
C. Predicts cell growth at a linear rate
D. All of the above

32. To describe components of an airlift bioreactor which of the follow-ings are generally included?

A.Disengagement zone, air riser, downcomer
B. Flotsam, jetsam, downzone
C. Air comer, disentanglement zone, downsizer
D. All of the above