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WorksheetsEnzymes
Total questions: 12
Worksheet time: 24mins
Name
Class
Date
1.
Enzymes are
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
2.
Which of the following binds to the active site of an enzyme?
a)
substrate
b)
product
c)
codon
d)
none of the above
3.
An enzyme speeds up a chemical reaction in the cell, but can only be used once?
a)
true
b)
false
4.
Enzymes speed up chemical reaction by
a)
destroying products
b)
lowering activation energy
c)
increasing activation energy
d)
allowing reactions to process at their own speed
5.
Based on the graph, what temperature does this enzyme work best?
a)
15 C
b)
40 C
c)
30 C
6.
In the diagram, what is letter A?
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
7.
Which of the following statement suggests that the shape of an enzyme determines the enzyme's function?
a)
enzymes can operate in a wide range of conditions
b)
enzymes are specific to a substrate
c)
enzymes are activated by neighboring molecules
8.
The diagram shows the series of a reactions that convert lactose into a usable form .
If enzyme 4 is denatured (stops working), the levels of which substance will increase?
If enzyme 4 is denatured (stops working), the levels of which substance will increase?
a)
Lactose
b)
Galactose
c)
Glucose-1-Phosphate
9.
Refer to the graphic above: Amino acids can be joined together by removing H+ and OH- forming a protein and water. What is this process called?
a)
dehydration synthesis
b)
hydrolysis
c)
photosynthesis
10.
Which statement explains the effect of the inhibitor?
a)
The inhibitor changes the shape of the active site preventing the substrate from attaching.
b)
the inhibitor causes the substrate to attach to the active site
c)
the inhibitor has no effect on the enzyme
11.
Which line represents an enzyme-catalyzed reaction?
a)
Line 1
b)
Line 2
12.
What is the function of an enzyme?
a)
enzymes break themselves into small pieces
b)
they slow down chemical reactions
c)
they speed up chemical reactions
d)
enzymes combine products to form reactants
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