Correct Answer: yeast cells respire at low glucose concentrations
5. Continuous culture has an advantage over to a batch cultures as
Options
A. continuous reactors do not need to be shut down and cleaned as regularly as a batch reactor
B. most downstream and upstream processes are continuous in nature and thus the operation of continuous bioreactor can be better integrated into the overall manufacturing process
C. cells can be maintained at a constant physiological state simply by setting the dilution rate
Correct Answer: oxygen material balance in an aerated batch fermenter during the growth of microorganisms
9. During aeration, a cylindrical reactor had a height of 10 m. Without aeration, the height was 7.5 m. Under these aeration and mixing conditions, the gas hold up in the reactor is
10. A cylindrical reactor has a liquid volume of 100,000 litres. It has an aspect ratio the ratio of the channel height to width of 1:1. The height of the liquid in the reactor will be approximately: