(a)[2]
Explain what is meant by the term continuous culture.
(b)
In an investigation of fungal growth in culture, a number of factors were changed, including temperature, concentration of the carbon source and concentration of the nitrogen source. Some of the findings are shown in Table 3.1.
(b(i))[3]
Describe how temperature affects fungus growth at the different concentrations of the carbon source.
(b(ii))[3]
Explain why the fungus needs carbon and nitrogen sources. carbon ................................................................ nitrogen ................................................................