Enzyme Catalysis 1 of 5 AB?A+B Part B Six solutions are made, each with a Y conc
ID: 265782 • Letter: E
Question
Enzyme Catalysis
1 of 5
AB?A+B
Part B
Six solutions are made, each with a Y concentration of 1.0 M and varying concentrations of ABas shown below. Based on the concentrations, rank the solutions in decreasing order of reaction rate.
Rank from fastest to slowest reaction rate. To rank items as equivalent, overlap them.
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0.2 M AB
0.3 M AB
0.4 M AB
0.5 M AB
0.6 M AB
0.7 M AB
Slowest reaction rate
Fastest reaction rate
The correct ranking cannot be determined.
The enzyme Y catalyzes the elementary reactionAB?A+B
An enzyme concentration of 1.0 M Y can convert a maximum of 0.5 M AB to the products A and Bper second.Part B
Six solutions are made, each with a Y concentration of 1.0 M and varying concentrations of ABas shown below. Based on the concentrations, rank the solutions in decreasing order of reaction rate.
Rank from fastest to slowest reaction rate. To rank items as equivalent, overlap them.
View Available Hint(s)
Reset
Help
0.2 M AB
0.3 M AB
0.4 M AB
0.5 M AB
0.6 M AB
0.7 M AB
Slowest reaction rate
Fastest reaction rate
The correct ranking cannot be determined.
Explanation / Answer
According to the information, the enzyme is capable of converting substrate concentration of 0.5M at its maximum speed. Thus, all the substrate below this will be easily converted by the enzyme as well, however, those at higher concentration than 0.5M will be slowly converted by enzyme.This is because a lower concentration of AB would ensure that all the enzyme active sites are occupied by the substrate. Also, it is important to note that the slowest step of the enzyme caalysis is the rate limiting step as well. Thus, the correct order of increasing rate of reaction can be found as:
Slowest reaction: 0.7M, 0.6M, 0.5M, 0.4M, 0.3M, 0.2M of AB.
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