How long will it take for the initial concentration of A to fall from 0.20 M to 0.075, if the rate constant for a reaction of zero-order in A is 0.035 mol L^–1 s^–1.

#Question id: 14279

#Section 5: Bioprocess Engineering and Process Biotechnology

#Question id: 15139

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

#Question id: 14243

#Section 5: Bioprocess Engineering and Process Biotechnology

A tubular-bowl centrifuge is used to concentrate a suspension of genetically-engineered yeast containing a new recombinant protein. At a speed of 12 000 rpm, the centrifuge treats 3 l broth min^-1 with satisfactory results. It is proposed to use the same centrifuge to separate cell debris from homogenate produced by mechanical disruption of the yeast. If the average size of the debris is one-third that of the yeast and the viscosity of the homogenate is five times greater than the cell suspension, what flow rate can be handled if the centrifuge is operated at the same speed? _____________________

#Question id: 15577

#Section 5: Bioprocess Engineering and Process Biotechnology

#Question id: 3865

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following statements about E. coli RNA polymerase is false?