Two of the labelled parts A, B, C and D in Fig. 5.1 are involved in making proteins such as lipase. Identify those two parts, name them, and explain how they take part in protein manufacture.
Suggest why B. subtilis has flagella.
Explain why plasmids are useful in biotechnology.
Give the name of the large industrial vessels used to culture bacteria.
In graph E, biomass increases as shown in Fig. 5.2. Use the letter M to indicate the part of graph E where the bacteria are reproducing most rapidly.
Calculate the percentage increase in biomass shown by graph E in the first $6$ hours.
Describe two ways in which graph E and graph F differ.
Suggest one environmental condition that may have produced the differences between graph E and graph F.
Lipase is also made by the human body. Explain why it is made and how its function differs from that of bile.