WorksheetsEnzymes
Total questions: 20
Worksheet time: 18mins
Name
Class
Date
1.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
2.
Based on the graph, what is the optimal temperature for this enzyme?
a)
15oC
b)
40oC
c)
30oC
d)
35oC
3.
In the diagram, what is letter A?
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
4.
Enzymes are...
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
5.
What is the function of an enzyme?
a)
enzymes break themselves into small pieces
b)
enzymes slow down chemical reactions
c)
enzymes speed up chemical reactions
d)
enzymes combine products to form reactants
6.
Letter D...
a)
active site
b)
enzyme
c)
substrate
d)
products
7.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
8.
Letter C...
a)
active site
b)
enzymes
c)
substrate
d)
products
9.
Letter E...
a)
active site
b)
enzyme
c)
substrate
d)
products
10.
With what 3 letters do enzymes typically end?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
11.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
12.
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 .
13.
What happens when enzymes are heated to a high temperature?
a)
The enzymes die.
b)
The shapes of the enzyme are altered.
c)
The enzymes' amino acid sequence changes.
d)
The enzymes remain the same
14.
What happens to an enzyme when it is denatured?
a)
Activation energy is lowered.
b)
It becomes stronger.
c)
It loses its shape.
d)
Activation energy is raised.
15.
Every enzyme has a optimal temperature and pH. True or False?
a)
True
b)
False
16.
Enzymes are composed of which of the following structural unit?
a)
amino acids
b)
carbohydrates
c)
nucleotides
d)
monosaccharides
17.
Which of these is most likely an enzyme? (Based on the suffix)
a)
Sucrose
b)
Galactose
c)
Fructose
d)
Amylase
18.
What is another name for enzymes?
a)
chemical catalyst
b)
microorganism
c)
biological catalyst
d)
catalyst
19.
What makes an enzyme substrate specific?
a)
Size
b)
Shape
c)
Name
d)
Location it is found in
20.
Which of these is NOT true.
a)
Enzymes can denature (change shape) when the temperature gets too high.
b)
Enzymes can only be used once in a chemical reaction.
c)
Enzymes can denature when the pH changes.
d)
Enzymes speed up chemical reactions.
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