regulation of population that is influenced by population density, such as crowding effects; usually involves biotic factors

regulation of populations by factors that operate independent of population density, such as forest fires and volcanic eruptions; usually involves abiotic factors

single bone that comprises the lower jaw of mammals

individual DNA monomer (single unit)

double-helical molecule that carries the hereditary information of the cell.

removal of a phosphate group from a molecule

change in the membrane potential to a less negative value

movement downward of a bone, such as after the shoulders are shrugged and the scapulae return to their normal position from an elevated position; opposite of elevation

protective plant tissue covering the outermost part of the plant; controls gas exchange

part of the loop of Henle that descends from the renal cortex into the renal medulla

(also, discovery science) form of science that aims to observe, explore, and investigate

linkages between adjacent epithelial cells that form when cadherins in the plasma membrane attach to intermediate filaments

cleavage pattern in which developmental fate of each blastomere is tightly defined

type of food web in which the primary consumers consist of decomposers; these are often associated with grazing food webs within the same ecosystem

former form phylum of fungi that do not have a known sexual reproductive cycle (presently members of two phyla: Ascomycota and Basidiomycota)