Gwen Stefani is American. Her family heritage is: Italian (father) Irish, Scottish, English, Norwegian, German (mother)
Cell (biology) The cell is the structural and functional unit of all living organisms, and is sometimes called the building block of life.. Some organisms, such as bacteria, are unicellular, consisting of a single cell. Other organisms, such as humans, are multicellular, (humans have an estimated 100 trillion cells; a typical cell size is 10 Âµm, a typical cell mass 1 nanogram). The largest known cell is an ostrich egg.
The cell is the smallest unit of âlifeâ and marks the boundary between the living and the nonliving world. Interestingly enough, cells exhibit all of the characteristics of life mentioned in Chapter One of the text. As a result, cells are the smallest living biological units. We will see in this chapter that all cells have certain features in common, such as cytoplasm (interior of the cell), a cell membrane, a genetic center and the ability to synthesize proteins.