Enzyme Quiz

The correct answer for each question is indicated by a [http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/correct.gif] .



1 CORRECT Enzymes are


[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] A) lipids.


[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/correct.gif]
[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio_selected.gif] B) proteins.



[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] C) carbohydrates.



[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] D) nucleic acids.



[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] E) steroids.






2 CORRECT Which of the following binds to the active site of an enzyme?


[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] A) water



[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] B) product


[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/correct.gif]
[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio_selected.gif] C) substrate



[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] D) any other enzyme



[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] E) none of the above






3 CORRECT Which of the following correctly represents the mechanism of enzyme function?


[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] A) S + P -> E-P -> E + P



[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] B) E + P -> E-P -> E-S -> E + S



[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] C) E + P -> E-S -> E-P -> E + P


[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/correct.gif]
[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio_selected.gif] D) E + S -> E-S -> E-P -> E + P



[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] E) E + S -> E-P -> E-S -> E + S






4 CORRECT An enzyme can only bind one reactant at a time.


[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] A) True


[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/correct.gif]
[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio_selected.gif] B) False






5 INCORRECT An enzyme speeds up a chemical reaction in the cell, but can only be used once.


[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio_selected.gif] A) True


[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/correct.gif]
[http://ewhighered.mcgraw-hill.com/olcweb/styles/shared/radio.gif] B) False