#Question id: 14311
#Section 5: Bioprocess Engineering and Process Biotechnology
Consider following fig, which applies to a fed-batch system.
Assume at t = 0, V = 100 l, X = 2 g/l, m = 1 h-1 , S0 = 4 g/l, and S = 0.01 g/l. V is increased at a constant rate such that dV/dt = 20 l/h = F (or flow rate) and X is constant at all times. What is µ at t = 5 h?
#Question id: 261
#Section 2: General Biology
Which is not a difference between B-DNA and A-DNA?
#Question id: 17664
#Section 7: Recombinant DNA technology and Other Tools in Biotechnology
#Question id: 14314
#Section 5: Bioprocess Engineering and Process Biotechnology
An industrial waste-water stream is fed to a stirred-tank
reactor continuously and the cells are recycled back to the reactor from the
bottom of the sedimentation tank placed after the reactor. The following are
given for the system: F = 100 l/h; S0 = 5000 mg/l; mm = 0.25 h^-1 ; Ks = 200
mg/l; α (recycle ratio) = 0.6; C (cell
concentration factor) = 2; Y M X/S = 0.4. The effluent
concentration is desired to be 100 mg/l. The effluent concentration is desired to be
100 mg/l. If the residence time is 2 h in the sedimentation tank, determine the
volume of the sedimentation tank and cell concentration in the effluent of the
sedimentation tank.
#Question id: 2014
#Section 2: General Biology
Some pathogens can undergo rapid changes resulting in antigenic variation. Which of the following is such a pathogen?