
Enzymes AS Level
Authored by Albert Martani
Biology
11th Grade
Used 17+ times

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19 questions
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1.
HOTSPOT QUESTION
45 sec • 1 pt
The solid line on the graph represents the product formed over time for a reaction in a cell.
Which other line represents the effect of adding the enzyme for this reaction?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the factor limiting the rate in region X?
substrate concentration
enzyme concentration
temperature
number of active sites
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What would limit the initial rate of reaction at point X?
enzyme concentration
pH
substrate concentration
temperature
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which statements describe some enzyme actions?
1 Enzymes hold reacting molecules so that their reactive groups are close together.
2 In an enyzme-catalysed reaction, more molecules have sufficient energy to react than without enzyme.
3 Reactions catalysed by enzymes take place at a lower temperature than they would without the enzyme.
1, 2 and 3
1 and 2 only
1 and 3 only
2 and 3 only
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which region on the graph shows the activation energy of an enzyme-catalysed reaction?
A
B
C
D
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
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