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7. Amani is conducting an experiment to assess the survival of microbes in different conditions. She...

7. Amani is conducting an experiment to assess the survival of microbes in different conditions. She has inoculated a yoghurt which contains Lactobacilli with yeast. Amani reduced the pH of the yoghurt to pH 4. Answer in your own words.

a. With the help of a labelled growth curve, describe the effect of yeast on yoghurt.

answer:

b. With the help of a labelled growth curve, briefly describe the effect of the pH on the cells of Lactobacilli.

answer:

(Graph – 1, written – 1.5 total – 2.5 marks)

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