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WorksheetsGrade 9 Enzymes
Total questions: 15
Worksheet time: 13mins
Name
Class
Date
1.
Enzymes are an example of
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
2.
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
3.
Each enzyme only has 1 substrate that will fit its active site. What is this called?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
4.
What 3 letters do enzymes typically end in?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
5.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
6.
In the diagram, what is letter A?
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
7.
Letter D...
a)
active site
b)
enzyme
c)
substrate
d)
products
8.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
9.
Letter C...
a)
active site
b)
enzymes
c)
substrate
d)
products
10.
Letter E...
a)
active site
b)
enzyme
c)
substrate
d)
products
11.
An enzyme speeds up a chemical reaction in the cell but can only be used once. True or False?
a)
true
b)
false
12.
Which color line represent a reaction with an enzyme present?
a)
Blue
b)
Red
c)
Both
d)
Neither
13.
The _____________________ mechanism describes how an enzyme changes shape once the substrate is bonded.
a)
hammer and nail
b)
induced fit
c)
jigsaw puzzle
d)
lock and key
14.
The ____________________ mechanism describes how each substrate must fit into the enzyme.
a)
lock and key
b)
hammer and nail
c)
jigsaw puzzle
d)
seesaw
15.
Where do substrates bind to an enzyme?
a)
calcium channels
b)
active site
c)
receptor molecules
d)
voltage-gated channels
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