WorksheetsEnzymes
Total questions: 18
Worksheet time: 11mins
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.
Each enzyme only has 1 substrate that will fit its active site. What is this called?
a)
reusablility
b)
denaturation
c)
specificity
d)
fragility
3.
With what 3 letters do enzymes typically end?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
4.
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.
5.
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 .
6.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
7.
In the diagram, what is letter A?
a)
product
b)
substrate
c)
enzyme-substrate complex
d)
active site
8.
Enzymes are...
a)
nucleic acids
b)
proteins
c)
lipids
d)
carbohydrates
9.
An enzyme speeds up a chemical reaction in the cell but can only be used once. True or False?
a)
true
b)
false
10.
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
11.
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
12.
Which of these is most likely an enzyme?
a)
Sucrose
b)
Galactose
c)
Fructose
d)
Amylase
13.
Enzymes speed up reaction rates by changing...
a)
Activation Energy
b)
pH
c)
Hydrogen Bonds
d)
Kinetic Energy
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 C...
a)
active site
b)
enzymes
c)
substrate
d)
products
17.
Letter E...
a)
active site
b)
enzyme
c)
substrate
d)
products
18.
Which enzyme is most efficient in a basic solution?
a)
A
b)
B
100 %
