#Question id: 14274

#Section 5: Bioprocess Engineering and Process Biotechnology

Nicotiana tabacum cells are cultured to high density for production of polysaccharide gum. The reactor used is a stirred tank, containing initially 100 litres medium. The maximum specific growth rate of the culture is 0.18 d^-1 and the yield of biomass from substrate is 0.5 g g^-l. The concentration of growth-limiting substrate in the medium is 3% (w/v). The reactor is inoculated with 1.5 g l^{- 1} cells and operated in batch until the substrate is virtually exhausted; medium flow is then started at a rate of 4 l d^-1. Fed-batch operation occurs under quasi-steady-state conditions. Estimate final biomass concentration?

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#Question id: 609

#Section 2: General Biology

The ________ theory explains cooperative binding by suggesting all subunits of a given protein have the same conformation, either all R or all T.

#Question id: 15109

#Section 1: Engineering Mathematics

#Question id: 14930

#Section 5: Bioprocess Engineering and Process Biotechnology

#Question id: 13039

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