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WorksheetsEnzymes
Total questions: 12
Worksheet time: 7mins
Name
Class
Date
1.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
2.
The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?
a)
Enzymes increase the energy of the reactants.
b)
Enzymes decrease the energy level of the products.
c)
Enzyme decrease the activation energy of the reaction.
d)
Enzymes reverse the direction of the reaction.
3.
Based on the graph, what is the optimal temperature for this enzyme?
a)
15oC
b)
40oC
c)
30oC
d)
35oC
4.
In the diagram, what is letter A?
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
5.
Enzymes are...
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
6.
What is the function of an enzyme?
a)
enzymes break themselves into small pieces
b)
enzymes slow down chemical reactions
c)
enzymes speed up chemical reactions
d)
enzymes combine products to form reactants
7.
What happens when enzymes are heated to a high temperature?
a)
The enzymes die.
b)
The shapes of the enzyme are altered denature
c)
The enzymes' amino acid sequence changes.
d)
The enzymes remain the same
8.
Enzymes speed up reaction rates by changing...
a)
Activation Energy
b)
pH
c)
Hydrogen Bonds
d)
Kinetic Energy
9.
Letter D...
a)
active site
b)
enzyme
c)
substrate
d)
products
10.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
11.
Letter C...
a)
active site
b)
enzymes
c)
substrate
d)
products
12.
Letter E...
a)
active site
b)
enzyme
c)
substrate
d)
products
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