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.
| 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. |