James' Unwanted Blood Clots

 

The antithrombin III test measures how well James' plasma inhibits thrombin.
This part of the tutorial illustrates aspects of enzyme kinetics.

 


When the color of the sample is plotted as a funtion of time, a curve like this is obtained.

The velocity of the reaction is the rate of change of color.
The Initial Velocity: of an enzymatic reaction is proportional to the amount of enzyme present in the solution.

Question:

Where on the above graph would you find the initial velocity?
  • region marked A
  • region marked B
  • region marked C
  • none of the above
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