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Worksheetsenzymes
Total questions: 21
Worksheet time: 16mins
Name
Class
Date
1.
The area that the substrate fits into on the enzyme is called the:
a)
Active Site
b)
Allosteric Site
c)
DiSulphide Bridge
d)
β-Pleated Sheet
2.
The current model of enzyme action is referred to as the:
a)
Induced Fit Model
b)
Lock & Key Model
c)
Singer-Nicolson Model
d)
Davson-Danielli Model
3.
At high temperatures enzyme activity declines because of:
a)
Denaturation
b)
Decreased Kinetic Motion
c)
Increased H-Bonding
d)
Dissociation of Ionic Compounds
4.
Most enzymes have the ending:
a)
-ase
b)
-ose
c)
-ic acid
d)
-ate
5.
The molecule an enzyme is working on is called the:
a)
Substrate
b)
Solvent
c)
Allosteric Inhibitor
d)
CoEnzyme
6.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
7.
Each enzyme only has 1 substrate that will fit its active site. What is this called?
a)
reusablility
b)
denaturation
c)
specificity
d)
fragility
8.
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 .
9.
In the diagram, what is letter A?
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
10.
Enzymes are...
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
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.
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
13.
Which of these is most likely an enzyme?
a)
Sucrose
b)
Galactose
c)
Fructose
d)
Amylase
14.
Letter D...
a)
active site
b)
enzyme
c)
substrate
d)
products
15.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
16.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
17.
Letter C...
a)
active site
b)
enzymes
c)
substrate
d)
products
18.
Letter E...
a)
active site
b)
enzyme
c)
substrate
d)
products
19.
Which enzyme is most efficient in a basic solution?
a)
A
b)
B
20.
Each enzyme only has 1 substrate that will fit its active site. What is this called?
a)
reusablility
b)
denaturation
c)
specificity
d)
fragility
21.
Based on the graph, what is the optimal temperature for this enzyme?
a)
15oC
b)
40oC
c)
30oC
d)
35oC
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