The graph presents three activation energy profiles for a chemical reaction (the

Question

The graph presents three activation energy profiles for a chemical reaction (the hydrolysis of sucrose): an uncatalyzed reaction, and the same reaction catalyzed by two different enzymes.

http://session.masteringbiology.com/problemAsset/1089932/16/1032762a.jpg

Rank these by reaction rate, as measured by the rate of product formation (from the most product formed to the least product formed). To rank items as equivalent, overlap them.

1) uncatalyzed reaction
2) reaction catalyzed by enzyme A
3) reaction catalyzed by enzyme B

Explanation / Answer

reaction catalyzed by enzyme B> reaction catalyzed by enzyme A>uncatalyzed reaction since the more activation energy means more of the energy need to be spent and thus decreases the rate

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