NSES Content Standard C 
Life Science: The cell
Grades 9-12, page 184

Cell functions are regulated. Regulation occurs both through changes in the activity of the functions performed by proteins and the selective expression of individual genes. This regulation allows cells to respond to their environment and to control and coordinate the synthesis and breakdown of specific molecules, cell growth and division.
 
 
Benchmark 5C The Living Environment: Cells
Grades 9-12, page 114
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.

Benchmark 6B The Human Organism: Human Development
Grades 9-12, page 134
As successive generations of an embryo's cells form by division, small differences in their immediate environments cause them to develop slightly differently, by activating or inactivating different parts of the DNA information.