Inglise keel unit 5 answers
ref to more detail of, nutrient addition / product removal, at a constant rate /
continually / throughout fermentation period ;
idea of rate of product removal equal to addition of nutrients ;
A keep volume constant
use of probes / sensors / monitors ; A thermometer (for temperature)
(to monitor) any two of, temperature / pH / oxygen levels ;
method to maintain pH e.g. use of buffers, tube to add acid / alkali ;
addition of antifoam ;
ref. to need to maintain sterility (to avoid contamination) ;
method to maintain constant temperature e.g. (thermostatically-controlled) water
bath, cooling jacket ; R heat exchanger
AVP ; e.g. use of stirrer, method to avoid, clumping of cells / blocking of inlet or
outlet pipe(s) 4 max
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