MEDIUM
AS and A Level
IMPORTANT
Earn 100

Sketch the shape that would be in the given graph, if excess hydrogen peroxide were not available. (Celery extract contains catalase enzyme).

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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>Question>Q 8
For each substrate concentration tested, the rate should be measured as soon as possible. Explain why. 
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 an investigation you could carry out to compare the temperature at which the enzyme lactase is completely denatured within ten minutes 

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 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

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.