WorksheetsEnzymes
Total questions: 12
Worksheet time: 9mins
Name
Class
Date
1.
Enzymes are considered to be
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
2.
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
3.
Any substance that is acted upon by an enzyme is called a(n)?
a)
Coenzyme
b)
Substrate
c)
Vitamin
d)
Polypeptide
4.
Where do substrates bind on an enzyme?
a)
voltage-gated channels
b)
surface receptor
c)
calcium channels
d)
active site
5.
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
6.
What 3 letters do enzymes typically end in?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
7.
Enzymes need certain environmental conditions in order to function properly. What happens when enzymes are heated to a high temperature?
a)
they die
b)
they denature
c)
they change their amino acid sequence
d)
they work better
8.
What factors affect an enzyme's reaction rate?
a)
temperature
b)
pH
c)
substrate concentration
d)
all of these
9.
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)
Extreme pH can denature enzymes.
d)
Enzymes speed up chemical reactions.
10.
The Km of an enzyme can best be described in the Michaelis-Menton equation as what of V enzyme activity?
a)
1/2 Vmax
b)
2Vmax
c)
2/1Vmax
d)
1/Vi
e)
Vmax
11.
Michaelis-Menten equation does not apply to allosteric binding/multiple binding sites
a)
True
b)
False
12.
Which type of inhibitor "poisons" an enzyme?
a)
Non-competitive inhibitor
b)
Competitive inhibitor
c)
Tightly bound inhibitor
d)
Irreversible inhibitor
100 %
