Inglise keel unit 5 answers
18 air flowing into the culture vessel flows out through an outflow tube;
19 preventing build-up of pressure;
20 AVP; e.g. sampling to check for mass of Chlorella max 6
(c)
difficulty maintainin g a constant temperature ; one mark for ref to difficulty of
difficulty maintainin g a constant pH ; controllin g environmen tal factors
heating / cooling, qualified;
foaming;
blocking of, inlet / outlet, tubes;
difficulties with, mixing / stirring;
contamination / keeping it sterile;
conditions need to be continuously monitored;
nutrient requirements may change;
AVP;
AVP; e.g. algal growth on glass
difficulties in providing sufficient light
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