Pathways, At the cell surface

In this section learn that a signaling pathway begins with the arrival of a chemical signal - such as a hormone or growth factor - at the cell surface.

Educational standards - statements

  • Complex interactions among the different kinds of molecules in the cell cause distinct cycles of activities, such as growth and division. Cell behavior can also be affected by molecules from other parts of the organism or even other organisms.| AAAS#5C/H5
  • Cells have particular structures that underlie their functions. Every cell is surrounded by a membrane that separates it from the outside world. Inside the cell is a concentrated mixture of thousands of different molecules which form a variety of specialized structures that carry out such cell functions as energy production, transport of molecules, waste disposal, synthesis of new molecules, and the storage of genetic material.| NSES#C 1.1