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WorksheetsEnzymes
Total questions: 14
Worksheet time: 12mins
Name
Class
Date
1.
Enzymes are...
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
2.
In the diagram, what is letter A?
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
3.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
4.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
5.
What will most likely happen if an appropriate enzyme is added to a chemical reaction?
a)
The reaction rate will increase.
b)
The equilibrium of the reaction will be maintained.
c)
The reaction rate will decrease.
d)
The reaction will stop.
6.
The diagram below illustrates a biochemical process that occurs in organisms. What is another name for the substance labeled "catalyst"?
a)
Enzyme
b)
inorganic compound
c)
Hormone
d)
Antibody
7.
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.
8.
Which enzyme is most efficient in a basic solution?
a)
A
b)
B
9.
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
10.
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 .
11.
With what 3 letters do enzymes typically end?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
12.
Based on the graph, what temperature does this enzyme work best?
a)
15 C
b)
40 C
c)
30 C
d)
47 C
13.
Enzymes will make a reaction go _______ and use ______ energy.
a)
faster, less
b)
faster, more
c)
slower, less
d)
slower, more
14.
What happens to an enzyme when it is denatured?
a)
Activation energy is lowered.
b)
It becomes stronger.
c)
It loses its shape.
d)
Activation energy is raised.
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