12 terms

Keystone vocab page one

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Abiotic
A term that describes a nonliving factor in an environment.
Activation energy
The minimum energy required to initiate a specific chemical reaction.
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. This compound releases 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 form of a gene).
Allele frequency
The measure of the relative frequency of an allele at a genetic locus in a population; expressed as a proportion or 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 a 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.