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Enzymes
Test Description: Review for Cell Unit Test
Instructions: Answer all questions to get your test result.
1) Enzymes catalyze reactions. What does a catalyst do?
A
Hulk Smash!
B
Creates energy
C
Nothing
D
Speeds things up
2) In our toothpickase lab, what was the substrate or reactant?
A
Your eyes
B
Your hands
C
The toothpick
D
None of the above
3) In our enzyme temperature lab, what relationship did we observe to be true?
A
At high temperatures, enzymes are destroyed and do not work
B
At room temperature, enzymes become products.
C
At high temperatures, enzymes work the best
D
At room temperature, enzymes are destroyed and do not work
4) How do enzymes increase the rate of reactions?
A
By providing more energy to the reactants
B
By providing more energy to the products
C
By increasing the activation energy
D
By lowering the activation energy
5) In a chemical reaction, a reactant binds to an enzyme at a region known as the
A
active site
B
product
C
catalyst
D
substrate
6) Which of the following is not a factor that affects enzyme activity?
A
pH (acidity)
B
Cell Membrane
C
Temperature
D
Enzyme Concentration
7) Which of the following is not a good analogy for an enzyme?
A
Energy Drink
B
Textbook
C
Coffee
D
Comcast High-Speed
8) Enzymes are made of
A
carbohydrate
B
nucleic acid
C
protein
D
lipids
9) 2 H2O2 ---> 2H2O + O2 // what is the reactant?
A
H2O
B
H2O2
C
catalase
D
O2
10) In the our toothpickase lab, what would happen if you put your hands in ice-water before you started breaking toothpicks?
A
Rate of reaction would decrease
B
Rate of reaction would stay the same
C
none of the above
D
Rate of reaction would increase
*select an answer for all questions
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