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.
Cell are considered the basic unit of life because all life forms are composed of them. Some forms of life are made of one cell; others contain... Cell are considered the basic unit of life because all life forms are composed of them. Some forms of life are made of one cell; others contain trillions. The simplest forms of life on earth are bacteria. They are made of a single cell, and they are believed to be the first form of life to arise on earth that still exists today. While plant and animal cells are significantly more complex than bacteria, there are a number of similarities that strongly suggest that modern cells descended from bacteria.