Question: The approach which is commonly used to determine the level of damage to animal cells in a culture medium is to monitor [A]. the concentration of lactate in the medium [B]. the level of lactate oxidase activity in the…

Question: Which of the following factors will affect the sensitivity of animal cells to shear conditions? [A]. Cell size [B]. Availability of nutrients in the medium [C]. The presence of shear protectorants in the medium [D]. All of the above…

Question: Animal cell cultures do not have much effect on shear forces because [A]. the cell size is generally smaller than the critical eddy size at which shear will have an effect [B]. cells are larger than the critical eddy…

Question: A stirred tank reactor containing a fluid with a density of 2.5 g.ml-1 and viscosity of 0.002 kg m-1s-1 is mixed at 120 rpm. If the fluid is mixed with an impeller having diameter 50 cm, then the Reynolds…

Question: Which pattern of mixing is preferred in stirred tank reactors during the culture of aerobic microorganisms? [A]. Laminar flow [B]. Transient flow [C]. turbulent flow [D]. all of these Answer: Option C Explanation: No answer description available for this…

Question: Mixing in stirred tank reactors can [A]. be described as either laminar, transient or turbulent [B]. achieve turbulent conditions by increasing the stirrer speed [C]. induce laminar flow conditions by the addition of baffles [D]. all of the above…