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An understanding of cells is therefore vital in any understanding of life itself. Cell biology is the study of cells and how they function, from the subcellular processes which keep them functioning, to the way that cells interact with other cells.
Biology is the science that studies life, and a central principle of Biology is that the cell is the basic unit of life. This means that all living organisms are made of cells.Bacteria, yeast and some other microorganisms consist of a single cell, whereas human beings contain about 100 000 000 000 000 cells.iology is the science that studies life, and a central principle of Biology is that the cell is the basic unit of life. This means that all living organisms are made of cells.