Chapter 8. Problem 8.7

Problem-Solving Video Assessment
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Problem 8.7: A different mode

You study enzyme Y and have discovered a new inhibitor of this enzyme that you would like to characterize. You perform kinetic studies in the lab, using reactions with and without 200μM inhibitor. Unfortunately, you realize after collecting your data that you forgot to label the reaction tubes, and you are uncertain which reaction contained the inhibitor. You have collected the following data:

Reaction Vmax Km
#1 75 μmol/min 23 μm
#2 ? ?
Table

You create a double-reciprocal plot of the data from reaction #2 and find the best-fit line. The equation of this line is y = 1.20x + 0.0133.

1.

What is the Vmax for reaction #2?

A.
B.
C.
D.
E.

_feedback_correct: Correct. _feedback_incorrect: Incorrect.

2.

What is the Km for reaction #2?

A.
B.
C.
D.
E.

_feedback_correct: Correct. _feedback_incorrect: Incorrect.

3.

Given all of the data you collected, which of the following statements is correct?

A.
B.
C.
D.
E.

_feedback_correct: Correct. _feedback_incorrect: Incorrect.

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