Glossary
amoeboid like an amoeba, especially in movement via extension of portions of the membrane AMP adenosine monophosphate, form of ATP after removal of two phosphate groups amphipathic having both polar and nonpolar regions anabolic characteristic of a reaction that builds complex molecules from simpler ones, and requires energy anadromous describes fish that return to the rivers where they were born in order to breed anaerobe organism not needing oxygen anaerobic without oxygen, or not requiring oxygen anemia lack of oxygen-carrying capacity in the blood aneurysm bulging of the wall of a blood vessel antagonism working against antagonist muscle muscle that works against the action undertaken anterior toward the front anterograde forward anthocyanins colored compounds made by plants anthropogenic of, or relating to, the influence of human beings or nature antibody immune system protein that binds to foreign molecules antigen foreign substance that provokes an immune response antioxidant substance that prevents damage from oxidation antitoxin molecule used to inactivate a toxin aphasia loss of the ability to form ideas into words apical at the tip apical meristem growing tip from which all plant tissues arise appendage attached organ or structure aqueous watery or water-based areolar related to a small space within a tissue aromatic compound including a double-bonded carbon ring arterioles any of the small, terminal twigs of an artery that ends in capillaries arthropods organisms with jointed appendages and exoskeletons, including insects, spiders, and crustaceans asymptomatic without symptoms ATP adenosine triphosphate, a high-energy nucleotide used by cells to power most energy-requiring reactions 236