In the following schematic drawing, in which direction (1 or 2) is the keratocyte migrating? What is the approximate length of the cell indicated by the bar on the left?
A) Direction 1; about 20 µm
B) Direction 1; about 2 µm
C) Direction 2; about 20 µm
D) Direction 2; about 2 µm
E) Either direction; about 2 µm

Question

In the following schematic drawing, in which direction (1 or 2) is the keratocyte migrating? What is the approximate length of the cell indicated by the bar on the left? 
A) Direction 1; about 20 µm 
B) Direction 1; about 2 µm 
C) Direction 2; about 20 µm 
D) Direction 2; about 2 µm 
E) Either direction; about 2 µm

Quizplus · Accepted Answer

The lamellipodium forms at the front of the cell toward where it is migrating. The cell is about 20 µm across and can move as fast as 30 µm/sec.

In the Following Schematic Drawing, in Which Direction (1 or 2)