#Question id: 14331
#Section 5: Bioprocess Engineering and Process Biotechnology
To ensure turbulent conditions and minimum mixing time during agitation with a turbine impeller, the Reynolds number must be at least 104. A stirred laboratory-scale fermenter with a turbine impeller 5 cm in diameter is operated at 800 rpm. If the density of broth being stirred is close to that of water, what is the upper limit for viscosity of the suspension if adequate mixing is to be maintained?
#Question id: 2099
#Section 3: Genetics, Cellular and Molecular Biology
Phosphate-containing lipids include all of the following except
#Question id: 13116
#Section 3: Genetics, Cellular and Molecular Biology
#Question id: 2074
#Section 2: General Biology
In some cells, there are many ion electrochemical gradients across the plasma membrane even though there are usually only one or two proton pumps present in the membrane. The gradients of the other ions are most likely accounted for by:
#Question id: 12943
#Section 7: Recombinant DNA technology and Other Tools in Biotechnology