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10 Cards in this Set
- Front
- Back
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The broad region that corresponds to the length of the thick filaments.
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A band
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One of three binding sites for tRNA during translation, it holds the tRNA carrying the next amino acid to be added to the polypeptide chain; A stands for aminoacyl-tRNA site.
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A site
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The body cavity in mammals that primarily houses parts of the digestive, excretory, and reproductive systems. It is separated from the more cranial thoracic cavity by the diaphragm.
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abdominal cavity
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Nonliving chemical and physical factors in the environment.
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abiotic components
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Genetically determined classes of human blood that are based on the presence or absence of carbohydrates A and B on the surface of red blood cells. The ABO blood group phenotypes, also called blood types, are A, B, AB, and O.
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ABO blood groups
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A plant hormone that generally acts to inhibit growth, promote dormancy, and help the plant tolerate stressful conditions.
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abscisic acid (ABA)
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The uptake of small nutrient molecules by an organism's own body; the third main stage of food processing, following digestion.
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absorption
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The range of a pigment's ability to absorb various wavelengths of light.
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absorption spectrum
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The very deep benthic communities near the bottom of the ocean. This region is characterized by continuous cold, extremely high water pressure, low nutrients, and near or total absence of light.
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abyssal zone
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A group of ancient jawed fishes from the Devonian period.
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acanthodians
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