My watch list  

Search Encyclopedia's Life Science Encyclopedia provides articles for 57,945 entries from biotechnology, pharmaceutics, medicine and biology as well as related scientific disciplines.


Flight feather

Flight feather (Milvus milvus) in flight, showing remiges and rectrices Flight feathers are the long, stiff, asymmetrically shaped, but symmetrically paired feather s on the wing s or tail of a bird ; those on the wings are called remiges (singular remex) while those on the tail are called rectri more

Charles Darwin

Charles Darwin Charles Robert Darwin (12 February 1809 – 19 April 1882 ) was an English naturalist . After becoming eminent among scientists for his field work and inquiries into geology , he proposed and provided scientific evidence that all species of life have evolved over time f more

Anabolic steroid

Anabolic steroid , transporting 5α-dihydrotestosterone . Anabolic steroids, also known as anabolic-androgenic steroids or AAS, are a class of steroid hormone s related to the hormone testosterone . They increase protein synthesis within cells, which results in the buildup of cellular tissue (an more

G. Ledyard Stebbins

G. Ledyard Stebbins George Ledyard Stebbins, Jr. (January 6 1906 – January 19 2000 ) was an American botanist and geneticist who is widely regarded as one of the leading evolutionary biologists and botanists of the 20th century. Stebbins received his Ph.D. in botany from Harvard Uni more


Metabolism adenosine triphosphate , a central intermediate in energy metabolism. Metabolism is the set of chemical reaction s that occur in living organism s in order to maintain life . These processes allow organisms to grow and reproduce, maintain their structures, and respond to their environme more

Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE