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Animation: How Enzymes Work
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View the animation below, then complete the quiz to test your knowledge of the concept.






1Enzymes are
A)lipids.
B)proteins.
C)carbohydrates.
D)nucleic acids.
E)steroids.



2Which of the following binds to the active site of an enzyme?
A)water
B)product
C)substrate
D)any other enzyme
E)none of the above



3Which of the following correctly represents the mechanism of enzyme function?
A)S + P -> E-P -> E + P
B)E + P -> E-P -> E-S -> E + S
C)E + P -> E-S -> E-P -> E + P
D)E + S -> E-S -> E-P -> E + P
E)E + S -> E-P -> E-S -> E + S



4An enzyme can only bind one reactant at a time.
A)True
B)False



5An enzyme speeds up a chemical reaction in the cell, but can only be used once.
A)True
B)False







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