A group of students set up the following experiments to investigate the factors that affect enzymes a) Identify the property of enzymes being investigated in tubes...

      

A group of students set up the following experiments to investigate the factors that affect enzymes
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a) Identify the property of enzymes being investigated in tubes 1 and 2.
b) After 3 hours the students tested the content in the four tubes for starch. They obtained the following results in tube 2, 3 and 4.
Tube 2 - Blue-black colour
Tube 3 - Brown colour of iodine remained
Tube 4 - Blue black colour.
Account for the results obtained in tube 3 and 4.
c) What results would you expect in tube 3 if temperature was maintained at 5°C? Give a reason for your answer.

  

Answers


sharon
a) Tube 1 - Enzyme specify;
Tube 2 - effect of pH on enzyme reactions ;
b) Tube 3 - Enzyme amylase converted starch to reducing sugars ; hence no change
Tube 4 - enzymes are denatured by high temperature; hence starch not hydrolysed ;
c) Would turn blue black. Enzyme would be inactive at low temperatures hence starch not hydrolysed
sharon kalunda answered the question on May 29, 2019 at 09:16


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