The biology It is the science that studies life. The term was introduced in order to gather in it a growing number of disciplines that referred to the study of living forms.
Although the term 'biology' appeared at the beginning of the 19th century, the study of living beings is much earlier, dates back to ancient Greece and emerged from the hands of scientists such as Hippocrates, Aristotle, Galen and Theophrastus.
Molecular biology has contributed knowledge about the structure and function of nucleic acids and proteins, key molecules of all living matter, are broad. The most important advance for modern science was the discovery of inheritance mechanisms.
Cellular biology studies the components and functions of cells, the basic structural unit of living matter. For its part, the biology of organisms studies the vital functions of multicellular organisms, governed by the actions and interactions of their cellular components, their growth, development and functioning (physiology). Research on the brain, nervous system and animal behavior is especially important.
Population biology studies evolution, where the contributions of Charles Darwin stand out. It also studies genetic variations in populations and populations in their natural habitats, that is, it includes genetics and ecology.
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