The graph in Figure 17-10 shows the time course of the polymerization of pure tubulin in vitro.You can assume that the starting concentration of free tubulin is much higher than it is in cells. 
Figure 17-10
A.Explain the reason for the initial lag in the rate of microtubule formation.
B.Why does the curve level out after point C?
Definitions:
Crashing
A project management technique used to reduce the time for a project by assigning more resources to critical tasks.
CPM Network
Critical Path Method Network; a project management tool used to identify the longest sequence of dependent tasks and estimate the minimum completion time for a project.
PERT Network
Project Evaluation and Review Technique Network; a project management tool used to schedule, organize, and coordinate tasks within a project.
Variance
A statistical measure that represents the spread of a data set, indicating how far each number in the set is from the mean and from each other.
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