#Question id: 11797
#Section 6: Plant, Animal and Microbial Biotechnology
A living cytoplasmic connection penetrate the walls between sieve tube elements and their companion cells; which are often complex and branched on the companion cell side, known as
#Question id: 27187
#Section 5: Bioprocess Engineering and Process Biotechnology
#Question id: 27326
#Section 5: Bioprocess Engineering and Process Biotechnology
The growth of a microorganism on glucose is described by the Monod model (µmax = 0.7 h¹ and Ks = 0.1 g L¹). If the initial biomass concentration in the batch fermenter is 0.1 g L¹, the minimum time required to triple the biomass concentration would be
#Question id: 1140
#Section 3: Genetics, Cellular and Molecular Biology
Cell sensitivity to an external signal is determined by:
#Question id: 14403
#Section 5: Bioprocess Engineering and Process Biotechnology
Invertase is immobilised in ion-exchange resin of average diameter 1 mm. The amount of enzyme in the beads is measured by protein assay as 0.05 kg m ^-3. 20 cm ^3 beads are packed into a small column reactor; 75 ml sucrose solution at a concentration of 16 mM is pumped rapidly through the bed. In another reactor an identical quantity of free enzyme is mixed into the same volume of sucrose solution. Assume the kinetic parameters for free and immobilised enzyme are equal: K,,, is 8.8 mM and the turnover number is 2.4 x 10 gmol glucose (g enzyme)-'s^-1. The effective diffusivity of sucrose in the ion-exchange resin is 2 x 10^-6cm2s 4. What is the rate of reaction by free enzyme?