Three similar table cloths with identical blood stains,
were washed in an enzyme-containing washing
powder solution. The same washing machine was
used at three different temperatures, 15°C (table
cloth 1), 37°C (table cloth 2) and 65°C (table cloth 3)

All tablecloths were washed for 10 minutes
3.1 What is the purpose of this investigation?
3.2 Which property of enzymes is being
investigated?
3.3 At what temperature did the enzyme operate
the best/optimally?
3.4 Give a reason for your answer in QUESTION 3.3.
3.5 What could possibly have happened with the
enzyme at 15°C?
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