The Cell

The Cell The cell is the fundamental structural unit of both told living organisms. Some cells argon complete organisms, such as the unicellular bacteria and protozoa; others, such as nerve, liver, and vim cells, argon specialized components of multi-cellular organisms. Cells range in size from the smallest bacteria-like mycoplasmas, which are 0.1 micrometer in diameter, to the egg yolks of ostriches, which are about 8 cm (about 3 in) in diameter.

Although they may differ wide in appearance and function, all cells have a contact membrane and an internal, water-rich substance called the cytoplasm, the compo sition of which differs significantly from the external environ of the cell. Within the cell is genetic material, deoxyribonucleic acid (DNA), containing coded instruction manual for the behavior and reproduction of the cell and also the chemical machinery for the translation of these instructions into the manufacture of proteins. Viruses are not considered cells because they lack th...If you want to make a motion a full essay, order it on our website: BestEssayCheap.com

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