Question

The primary function of focal contacts is

A) cell-ECM adhesion.
B) cell-cell adhesion.
C) cell-cell communication.
D) paracellular pathway regulation.
E) establishing cell polarity.

Answer 1

The primary function of focal contacts is cell-ECM adhesion. Focal contacts allow cells to adhere to the extracellular matrix (ECM), providing mechanical stability and signaling.

Step-by-step explanation:

The primary function of focal contacts is cell-ECM adhesion. Focal contacts are specialized structures in cells that allow them to adhere to the extracellular matrix (ECM), which is the external environment surrounding the cell. These adhesions help provide mechanical stability and signaling between the cell and its environment. One important protein involved in focal contacts is fibronectin, which binds to integrins on the cell surface and anchors the cell to the ECM.