Biology is the science that studies the life and living organisms, including structure, function, growth, evolution, distribution, and taxonomy. Modern biological science is very broad and eclectic, and consists of various branches and sub-disciplines. However, despite the wide scope, there are some general concepts governing all research, so all together in one area. Biologists generally recognize the cells as basic units of life, genes as the basic unit of inheritance, and evolution as a mechanism to encourage the creation of new species. In addition, the organism believed to have survived by eating, and convert the energy as well as to regulate it in order to remain stable state, and vital.

Sub-discipline of biology is defined based on the scale of organisms are studied, the type of organism being studied, and the methods used to study, among others:
    Biochemistry study the chemistry of life.
    Molecular biology associated with interactions between biological molecules.
    Botanical study the biology of plants
    Cellular biology examines the basic unit of all life, the cell
    Physiology study the function of the physical, chemical and organ tissue, and organ systems of an organism
    Evolutionary biology examines the process that generates biodiversity; and ecology study the interaction between organisms and their environment.