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Question 18M.3.SL.TZ1.1b

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.SL.TZ1.1b
Level SL Paper 3 Time zone TZ1
Command term Identify Question number b Adapted from N/A
b.
[Maximum mark: 1]
18M.3.SL.TZ1.1b

A study was carried out on the activity of catalase in bacteria living in extreme environments. Catalase decomposes hydrogen peroxide (H2O2). The data were obtained for a strain of bacteria called Vibrio rumoiensis which exhibits high catalase activity.

(b)

Identify two factors that would need to be controlled in generating these data.

[1]

Markscheme

temperature / pH / enzyme concentration / enzyme volume / quantity of bacteria

2 answers for 1 mark.

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