| 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 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. These release energy when one of its high-energy bonds is broken to release a phosphate |
| Adhesion | The intermolecular attraction between unlike molecules. Capillary action results from the Adhesive properties of water 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 of a gene). |
| Allele Frequency | The measure of the frequency of an allele at a genetic locus in a population; expressed as a proportion of percentage. |
| 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. |
