Cell theory
Cell theory states that the cell is the fundamental unit of life, and that all living things are composed of one or more cells or thesecreted products of those cells (e.g. shells, hairs and nails etc.). All cells arise from other cells through cell division
Evolution
A central organizing concept in biology is that life changes and develops through evolution, and that all life-forms known have acommon origin. The theory of evolution postulates that all organisms on the Earth, both living and extinct, have descended from a common ancestor or an ancestral gene pool.
Genetics
Genes are the primary units of inheritance in all organisms. A gene is a unit of heredity and corresponds to a region of DNA that influences the form or function of an organism in specific ways
Energy
The survival of a living organism depends on the continuous input of energy. Chemical reactions that are responsible for its structure and function are tuned to extract energy from substances that act as its food and transform them to help form new cells and sustain them.
The term biology is derived from the Greek word βίος, bios, "life" and the suffix -λογία, -logia, "study of."[3][4] The Latin form of the term first appeared in 1736 when Swedish scientist Carl Linnaeus (Carl von Linné) used biologi in his Bibliotheca botanica. It was used again in 1766 in a work entitled Philosophiae naturalis sive physicae: tomus III, continens geologian, biologian, phytologian generalis, by Michael Christoph Hanov, a disciple of Christian Wolff.
In general, biology recognizes the cell as the basic unit of life,genes as the basic unit of heredity, and evolution as the engine that propels the synthesis and creation of new species. It is also understood today that all organisms survive by consuming and transforming energy and by regulating their internal environment to maintain a stable and vital condition.
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Biology is the science of life. Biologists study the structure, function, growth, origin, evolution and distribution of living organisms. There are generally considered to be at least nine .“umbrella” fields of biology, each of which consists of multiple subfields
