MEDIUM
AS and A Level
IMPORTANT
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Outline an investigation you could carry out to compare the temperature at which the enzyme lactase is completely denatured within ten minutes,

When immobilised in alginate beads

Important Questions on Enzymes

MEDIUM
AS and A Level
IMPORTANT
Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 3 - Enzymes>Questions>Q 11

Outline an experiment you could carry out to investigate how long it takes the enzyme lactase to denature at 90°C 

When free in solution

MEDIUM
AS and A Level
IMPORTANT
Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 3 - Enzymes>Questions>Q 11

Outline an experiment you could carry out to investigate how long it takes the enzyme lactase to denature at 90°C

When immobilised in alginate beads.

EASY
AS and A Level
IMPORTANT
Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 3 - Enzymes>Questions>Q 11

Outline how you would determine the optimum pH of the enzyme lactase

When free in solution 

EASY
AS and A Level
IMPORTANT
Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 3 - Enzymes>Questions>Q 11

Outline how you would determine the optimum pH of the enzyme lactase

When immobilised in alginate beads.

EASY
AS and A Level
IMPORTANT
Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 3 - Enzymes>Questions>Q 12
Summarise the advantages of using immobilised enzymes rather than enzyme solutions. 
EASY
AS and A Level
IMPORTANT
Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 3 - Enzymes>EXAM-STYLE QUESTIONS>Q 1
The diagram shows an enzyme and two inhibitors of the enzyme, X and Y. Which of the following describes the two inhibitors? 
Question Image
EASY
AS and A Level
IMPORTANT
Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 3 - Enzymes>EXAM-STYLE QUESTIONS>Q 2
In a reaction controlled by an enzyme, which of the following graphs shows the effect of substrate concentration on the rate of the reaction, assuming the reaction is allowed to go to completion? 
EASY
AS and A Level
IMPORTANT
Biology for Cambridge International AS & A Level coursebook 2nd Edition Digital Access>Chapter 3 - Enzymes>EXAM-STYLE QUESTIONS>Q 3

The graph shows the progress of the digestion of starch by the enzyme salivary amylase. Why does the reaction slow down? 

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