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WorksheetsY10 U3 Essential Enzymes
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
With what 3 letters do enzymes typically end?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
2.
Enzymes are...
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
3.
What is another name for enzymes?
a)
chemical catalysts
b)
microorganisms
c)
biological catalysts
d)
inorganic catalysts
4.
What is the name for the mechanism of enzyme activity?
a)
Lock and key
b)
jigsaw puzzle
c)
hammer and nail
d)
two hands pattern
5.
The part of the enzyme that the substrate bonds to is called the _____.
a)
active site
b)
activation energy
c)
bond site
d)
peptide bond
6.
An enzyme speeds up a chemical reaction in the cell but can only be used once. True or False?
a)
true
b)
false
7.
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
8.
Which of these is most likely an enzyme?
a)
Sucrose
b)
Galactose
c)
Fructose
d)
Amylase
9.
Letter D...
a)
active site
b)
enzyme
c)
substrate
d)
products
10.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
11.
Letter C...
a)
active site
b)
enzymes
c)
substrate
d)
products
12.
Letter E...
a)
active site
b)
enzyme
c)
substrate
d)
products
13.
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 .
14.
Based on the graph, what temperature does this enzyme work best?
a)
15 C
b)
40 C
c)
30 C
d)
47 C
15.
Which 2 factors can affect the rate of enzyme activity?
a)
Light intensity
b)
Temperature
c)
pH
d)
Oxygen concentration
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