Choose all that are correct regarding impeller type choice in bioreactors. O Marine type impellers are ideal for shear sensitive mammalian cells. O Marine type impellers are ideal for less shear...

Extracted text: Choose all that are correct regarding impeller type choice in bioreactors. O Marine type impellers are ideal for shear sensitive mammalian cells. O Marine type impellers are ideal for less shear sensitive yeast cells. O One function of the impeller is to mix the contents of the bioactor (e.g., nutirents). O None of these options are true. O Impeller type choice depends on the shear sensitivity of the target cells and the solution viscosity. Choose all that are true regarding the phases of cell growth in a bioreactor. O None of these options are true. O There will always be a death phase in the bioreactor, since some cells are dying throughout. O Higher variability in the bioreactor contents is associated with stationary phase. O Higher varaibility in the bioreactor contents is associated with exponential phase when the cells are growing most rapidly. O There will always be a lag phase of growth in a bioreactor since the cells need time to adjust to their new enviroment upon innoculation. Choose all of the correct statements regarding harvesting from a bioreactor. O Harvesting occurs after downstream processing of the product. O None of these options are true. O The harvest time will ideally occur when cells have changed their metabolism. O The harvest time will ideally occur in late stationary phase for growth-associated products. O The harvest time will ideally occur in stationary phase just before reaching the dealth phase and the cell concentration begins to decrease.