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- 1. Multiple Choice
At high temperatures, the rate of enzyme action decreases because the increased heat......
neutralizes the acids and bases in the system
alters the shape of the active site of the enzyme
increases the concentration of the enzyme
changes the pH of the system
- 2. Multiple Choice
Enzymes speed up the rate of chemical reactions by.....
giving you extra oxygen.
absorbing water released when polymers are formed.
lowering the activation energy.
combining with excess hydrogen to form a gas.
- 3. Multiple Choice
The "lock and key" description explain the mechanism of
enzyme specificity
how temperature works
exocytosis
vacuole formation
- 4. Multiple Choice
The reactants to which enzymes bind are also known as
lipids
reactions
controls
substrates
- 5. Multiple Choice
Which enzyme would you expect to find in bacteria growing in a hot environment?
Enzyme X
Enzyme Y
- 6. Multiple Choice
Both enzymes will have the same amount of activity at 40 degrees Celsius?
True
False
- 7. Multiple Choice
Which enzyme is active over the largest temperature range?
Enzyme X
Enzyme Y
- 8. Multiple Choice
Which enzyme has an optimum temperature of 40 degrees Celsius?
Enzyme X
Enzyme Y
- 9. Match
Using the diagram, match the following.
Substrate
A
Enzyme
B
Active Site
C
Enzyme Substrate Complex
D
Product
E
- 10. Multiple Choice
Enzymes are important for the body because they
increase the activation energy needed for a chemical reaction.
keep the activation energy of a chemical reaction at a constant level.
lower the activation energy needed for the chemical reaction.
remove all of the activation energy needed for a chemical reaction.
- 11. Multiple Choice
An enzyme is which type of macromolecule
Carbohydrate
Lipid
Protein
Nucleic acid
- 12. Multiple Choice
The optimum pH for this enzyme is approximately
2
3.5
5.5
8
10
- 13. Multiple Choice
Which of the following does NOT have an impact on the rate at which an enzyme functions?
Temperature
pH
Amount of substrate
The type of enzyme
- 14. Multiple Choice
When an enzyme experiences very low temperatures the rate of reaction increases.
True
False
- 15. Multiple Choice
A prolonged period of high fever is dangerous to humans because... (choose TWO that apply)
It makes the enzymes work faster
It denatures the enzyme and stops working
It can make the enzyme function better than it did before
It can change the shape of an enzyme so it can not bind to the right substrate
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