TEST BANK FOR Campbell Biology 9th Edition GlossaryA+GRADED2023.

5′ cap -A modified form of guanine nucleotide added onto the 5′ end of a pre-mRNA acclimatization -Physiological adjustment to a change in an environmental factor. abortion -The termination of a pregnancy in progress. stands for aminoacyl tRNA.) absorption -The third stage of food processing in animals: the uptake of small nutrient genes that direct formation of the four types of floral organs. respiration, formed from a fragment of pyruvate attached to a coenzyme. abyssal zone -The part of the ocean's benthic zone between 2,000 and 6,000m deep. A site -One of a ribosome's three binding sites for tRNA during translation. The A site molecule. acanthodian -Any of a group of ancient jawed aquatic vertebrates from the Silurian and receptors and altering the permeability of the postsynaptic membrane to specific ions, absorption spectrum -The range of a pigment's ability to absorb various wavelengths of acetyl coenzyme A (acetyl CoA) -The entry compound for the citric acid cycle in cellular of growth hormones. Two of its many effects are to promote seed dormancy and abiotic -Nonliving; referring to the physical and chemical properties of an environment. molecules by an organism's body. largely or entirely from tissues other than the ovary. facilitate drought tolerance. Devonian periods. light; also a graph of such a range. ABC hypothesis -A model of flower formation identifying three classes of organ identity acetylcholine -One of the most common neurotransmitters; functions by binding to accessory fruit -A fruit, or assemblage of fruits, in which the fleshy parts are derived abscisicacid (ABA) -A plant hormone that slows growth, often antagonizing the actions holds the tRNA carrying the next amino acid to be added to the polypeptide chain. (A either depolarizing or hyperpolarizing the membrane.