WorksheetsMacromolecules and enzymes
Total questions: 15
Worksheet time: 30mins
Name
Class
Date
1.
This macromolecule carries hereditary information and instructions for building molecules
a)
carbohydrate
b)
lipids
c)
protein
d)
nucleic acid
2.
Which of the following statements is true about catalysts (enzymes)?
a)
Catalysts slow down the rate of chemical reactions.
b)
Enzymes help regulate pH.
c)
Catalysts are used up during a chemical reaction.
d)
Catalysts lower the activation energy of a chemical reaction.
3.
An enzyme and substrate can be compared to
a)
lock and key
b)
a faucet
c)
a door hinge
d)
light switch
4.
What type of macromolecule are enzymes?
a)
Protein
b)
Carbohydrate
c)
Lipid
d)
Nucleic Acid
5.
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
6.
Each enzyme only has 1 substrate that will fit its active site. What is this called?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
7.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
8.
After the enzyme and substrate bind together and perform the reaction, what does the substrate become?
a)
a substrate
b)
an enzyme
c)
a product
d)
an active site
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.
Based on the graph, what is the optimal temperature for this enzyme?
a)
15oC
b)
40oC
c)
30oC
d)
35oC
12.
Changes in pH and temperature can ___________________ an enzyme which causes it to lose its shape and affects its function.
a)
puncture
b)
denature
c)
double
d)
delete
13.
Which macromolecule is used as our main source of energy?
a)
Lipids/Fats
b)
Nucleic Acids
c)
Proteins
d)
Carbohydrates
14.
Monosaccharides are monomers of
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
15.
An enzyme speeds up a chemical reaction in the cell but can only be used once. True or False?
a)
true
b)
false
100 %
