Stas-Otto method A method of extraction of alkaloids from plants and animal bodies: the substance is digested in alcohol and tartaric acid, the fatty and resinous matters are precipitated with water, the fluid is made alkaline, and the alkaloids are extracted with ether or chloroform...
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
Muscle cells are specialized to generate force and movement. Learn about the different types of muscle tissues in this t..
Meiosis is a form of cell division that creates gametes. It is comprised of two divisions that in the end, the resulting..
This tutorial describes the different types and causes of brain damage. Find out how genetics, physical injury, lack of ..
Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiologic..
With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..
