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