A-LevelBiologyEnzymesMay/June 2023Paper 5 Q116 Marks
Polyphenol oxidase is an enzyme involved in the browning of fruit. Fig. 1.1 shows browning of the skin of bananas. [Figure 1.1] A student extracted polyphenol oxidase enzyme from ripened bananas. The student used this enzyme extract to investigate the factors affecting the activity of the enzyme. The student initially found that the enzyme extract was too concentrated, so the student made a 1:10 dilution of the enzyme extract.
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