Exhibit 5A
The following diagram shows the anode, cathode, and $\mathrm { pH }$ gradient of an isoelectric focusing bed:

-Refer to Exhibit 5A. If the amino acid glycine were placed in the bed where the pH is 7, and the current were turned on, it would migrate closest to which of the following positions?

Question

Exhibit 5A
The following diagram shows the anode, cathode, and $\mathrm { pH }$ gradient of an isoelectric focusing bed:

-Refer to Exhibit 5A. If the amino acid glycine were placed in the bed where the pH is 7, and the current were turned on, it would migrate closest to which of the following positions?

Quizplus · Accepted Answer

Glycine has a pI (isoelectric point) of approximately 6, which means it has no net charge at that pH. In the diagram, the pH gradient decreases from left to right, so glycine will migrate towards the right until it reaches the point where the pH matches its own pI. Therefore, it will migrate closest to the position where the pH is 6, which is choice B.

Exhibit 5A the Following Diagram Shows the Anode, Cathode, And \mathrm

Exhibit 5A
the Following Diagram Shows the Anode, Cathode, And \mathrm