Question

The focal adhesions that form near the leading edge of a motile cell exert traction force through their associated __________ and then typically disassemble as the cell moves forward.

Answer 1

Focal adhesions in motile cells exert traction force through contractile stress fibers and networks, which allow the cell to move forward and disassemble the adhesions as it progresses.

Step-by-step explanation:

The focal adhesions that form near the leading edge of a motile cell exert traction force through their associated contractile stress fibers and networks and then typically disassemble as the cell moves forward. These focal adhesions are large, dynamic adhesion clusters that serve as both mechanical linkers and signaling centers in the cell.

The traction force generated by the contractile stress fibers is transmitted to the substrate, allowing the cell to exert force on its environment and migrate.