Cell growth usually refers to cell proliferation, the increase in cell numbers that occurs through repeated cell division. Cell growth can also refer to the enlargement of cell volume, which can ...

Most cell signals are chemical in nature. For example, prokaryotic organisms have sensors that detect nutrients and help them navigate toward food sources. In multicellular organisms, growth ...

Unicellular organisms use cell division to reproduce. Multicellular organisms use cell division for growth and repair of damage such as wounds.

The basic structure of most animal and plants cells is shown below. All cells are produced from other cells by the process of cell division. Cell division occurs when one cell divides to produce ...