Active Transport -The movement of particles from an area of low concentration to an area of high concentration that uses energy provided by ATP or a difference in electrical charges across a cell membrane.
Adenosine Triphosphate (ATP) A molecule that provides energy for cellular reactions and processes. ATP releases energy when one of its high‐energy bonds is broken to release a phosphate group.
Adhesion The intermolecular attraction between unlike molecules. Capillary action results from the adhesive properties ofwater and the molecules that make up plant cells.
Agriculture The artificial cultivation of food, fiber, and other goods by the systematic growing and harvesting of various organisms.
Allele A variation of a gene’s nucleotide sequence (an alternative form of a gene).
Allele Frequency The measure ofthe relative frequency of an allele at a genetic locusin a population; expressed as a proportion orpercentage.
Analogous Structure A physical structure, present in multiple species,that is similar in function but different in form and inheritance.
Aquatic A term that describes an organism associated with a water environment.
Atom The smallest unit of an element that retainsthe chemical and physical properties ofthat element.
Biochemical Conversion The changing of organicmatterinto other chemicalformssuch asfuels.
Bioenergetics The study of energy flow (energy transformations)into and within living systems.Keystone Exams:Biology
Biogeochemical Cycles Themovement of abiotic factors between the living and nonliving components within ecosystems; also known asnutrient cycles(i.e., water cycle, carbon cycle, oxygen cycle, and nitrogen cycle).
Biological Macromolecules A group of biomacromoleculesthatinteract with biologicalsystems and their environments.
Biology The scientific study oflife.
Biome A large area or geographical region with distinct plant and animal groups adapted to that