| A | B |
|---|
| Abiotic | A term that describes a nonliving factor in an ecosystem. |
| 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 | 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 tendency of water molecules to stick to other surfaces. |
| Agriculture | The artificial cultivation of food fiber and other goods by the systematic growing and harvesting of various organisms |
| Allele | A version of a gene due to a variation in the nucleotide sequence |
| Allele Frequency | How often an allele occurs in a population its relative frequency. |
| 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 retains the chemical and physical properties of that element. |
| Biochemical Conversion | The changing of organic matter into other chemical forms such as fuels. |
| Bioenergetics | The study of energy flow (energy transformations) into and within living systems. |
| Biogeochemical Cycles | The movement of abiotic factors between the living and nonliving components within ecosystems; also known as nutrient cycles (i.e. |
| Biological Macromolecules | A group of biomacromolecules that interact with biological systems and their environments. |
| Biology | scientific study of life. |
