In animal physiology, respiration is the function of the respiratory system, which moves oxygen into the organism and carbon dioxide out of the organism. This type of respiration is also ...

Photosynthesis is the process in which the energy from light is converted into chemical energy. This process is used by plants, algae, and some bacteria.http://www.life.illinois.edu ...

Mary Poffenroth is an adjunct professor of biology at San Jose State University. She holds a master's degree in biological sciences from the same. Apart from hosting Mahalo videos ...

Arginine vasopressin (AVP), also known as vasopressin, argipressin or antidiuretic hormone (ADH), is a hormone found in most mammals, including humans. Vasopressin is a peptide hormone which controls the reabsorbtion ...

Methotrexate (rINN) (), abbreviated MTX and formerly known as amethopterin, is an antimetabolite and antifolate drug used in treatment of cancer and autoimmune diseases. It acts by inhibiting the metabolism ...

Noradrenaline (BAN) (abbreviated NA or NAd) or norepinephrine (INN) (abbreviated norepi or NE) is a catecholamine with dual roles as a hormone and a neurotransmitter.

Starch or amylum is a carbohydrate consisting of a large number of glucose units joined together by glycosidic bonds. This polysaccharide is produced by all green plants as ...

Piracetam (sold under many brand names) is a nootropic drug. In many clinical trials, it enhances cognition and memory, slows brain aging, increases blood flow and oxygen to the brain ...