WorksheetsEnzymes
Total questions: 12
Worksheet time: 14mins
Name
Class
Date
1.
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.
2.
Based on the graph, what is the optimal temperature for this enzyme?
a)
15oC
b)
40oC
c)
30oC
d)
35oC
3.
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
4.
Enzymes speed up reaction rates by changing...
a)
Activation Energy
b)
pH
c)
Hydrogen Bonds
d)
Kinetic Energy
5.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
6.
Letter C...
a)
active site
b)
enzymes
c)
substrate
d)
products
7.
What 3 letters do enzymes typically end in?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
8.
In a chemical reaction, ________ are what you have at the end
a)
Products
b)
Molecules
c)
Reactants
d)
Substances
9.
Which of the following can cause an enzyme to denature? (check all that apply)
a)
large change in pH (like adding acid to catalase)
b)
large change in temperature (like boiling catalase)
c)
water
d)
love
10.
Based on the graph, what is the optimal temperature for this enzyme?
a)
15oC
b)
40oC
c)
30oC
d)
35oC
11.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
12.
What are the four biological molecules?
a)
proteins, carbohydrates, lipids, nucleic acids
b)
A, T, C, G
c)
water, air, earth, and fire
d)
Joe, Nick, and Kevin Jonas
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