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