Which of the following statements regarding a catalyst is false?

A. Substrates help enzymes catalyze reactions.
B. A catalyst does not affect E for the reaction.
C. A catalyst increases the rate of a reaction without being consumed in the reaction.
D. A catalyst provides a different mechanism for the reaction with a lower activation energy.

Question

Which of the following statements regarding a catalyst is false?

 		A.	Substrates help enzymes catalyze reactions.
 		B.	A catalyst does not affect E for the reaction.
 		C.	A catalyst increases the rate of a reaction without being consumed in the reaction.
 		D.	A catalyst provides a different mechanism for the reaction with a lower activation energy.

vera_ewing · Answer

There is a little triangle to the left of the "E" in choice B.

sweetburger · Answer

ahh so Delta E

sweetburger · Answer

change in Energy of the reaction im assuming not really sure

vera_ewing · Answer

Which is the answer?

sweetburger · Answer

Well its definitely not C. or D.. If answer B. said that the Ea was not changed then it would be false. But if truly says Delta E than no Delta E would not be changed by a catalyst in a reaction. So I'm going to have to say A. Im going to check what a substrate does quickly because i dont remember.

vera_ewing · Answer

Okay, I'll wait until you're done before I choose an answer.

vera_ewing · Answer

@aaronq It's A right?

sweetburger · Answer

Hmm I'm really not sure about this question as apparently enzymes link with substrates to lower Ea and increase reaction rate.

aaronq · Answer

yeah

vera_ewing · Answer

Okay, thank you :)