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WorksheetsEnzymes
Total questions: 20
Worksheet time: 40mins
Name
Class
Date
1.
The element _______is found in all of the organic compounds.
a)
Iron
b)
Nitrogen
c)
Carbon
d)
Oxygen
2.
Which biomolecule is also known as enzymes?
a)
Carbohydrate
b)
Lipid
c)
Nucleic Acid
d)
Protein
3.
What does the word organic mean?
a)
has nitrogen
b)
has sulfur
c)
has carbon
d)
has oxygen
4.
The site where substrates fit on an enzyme is the
a)
bomb site
b)
active site
c)
bond site
d)
enzyme site
5.
What is the purpose of an enzyme?
a)
give permission for the reaction
b)
raise activation energy
c)
speed up reactions
d)
control how many reactions occur
6.
Enzymes are capable of increasing the rate of a chemical reaction within a living cell. Enzymes accomplish this through which of the following means?
a)
reducing the number of products
b)
reducing the activation energy
c)
increasing the temperature of the cell
d)
increasing the concentration of reactants
7.
Each enzyme only has 1 substrate that will fit its active site. What is this called?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
8.
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.
9.
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 .
10.
After the enzyme and substrate bind together and perform the reaction, what does the substrate become?
a)
a substrate
b)
an enzyme
c)
a product
d)
an active site
11.
What 3 letters do enzymes typically end in?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
12.
Which substrate would this enzyme catalyze?
a)
Δ
b)
σ
c)
∅
d)
μ
13.
What makes an enzyme substrate specific?
a)
Size
b)
Shape
c)
Name
d)
Location it is found in
14.
Enzymes need certain environmental conditions in order to function properly. What happens when enzymes are heated to a high temperature?
a)
they die
b)
they denature
c)
they change their amino acid sequence
d)
they work better
15.
Letter B represents the ...
a)
active site
b)
enzyme
c)
substrate
d)
products
16.
Letter C represents the ...
a)
active site
b)
enzymes
c)
substrate
d)
products
17.
Letter D represents the ...
a)
active site
b)
enzymes
c)
substrate
d)
products
18.
Letter E represents the ...
a)
active site
b)
enzyme
c)
substrate
d)
products
19.
According to the graph, at which pH do all three enzymes show some activity?
a)
2
b)
5
c)
8
d)
11
20.
Which of the following is NOT a biomolecule
a)
Carbohydrates
b)
Water
c)
Lipids
d)
Proteins
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