Analysis of Biological Networks : Introduction to Cell Biology ∗
نویسنده
چکیده
The basic unit of life is the cell. All living creatures are made of cells which are small membrane-bounded units filled with a concentrated aqueous solution of chemicals, the cytoplasm. Each cell is an independent entity, capable of creating copies of itself by growing and dividing into two identical daughter cells. The complete characteristics of an organism is carried by each of its cells. This hereditary information is stored within the DNA molecule (see below). In higher multicellular organisms, each cell carries the same DNA content, storing the complete biological information essential for life [1]. Organisms can be divided into two classes:
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