15 Terms
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Cell biology
The study of cell structure, physiological properties, interactions with the environment and life cycle.
Industry: Biology
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Cell biology
autotrophic
Biology; Cell biology
Refers to organisms that synthesize their nutrients and obtain their energy from inorganic raw materials.
auricle
Biology; Cell biology
The chamber of the heart that receives blood from the body returned to the heart by the veins. Also referred to as atrium.
autonomic system
Biology; Cell biology
The portion of the peripheral nervous system that stimulates smooth muscle, cardiac muscle, and glands; consists of the parasympathetic and sympathetic systems.
asymmetrical
Biology; Cell biology
In animals, a term referring to organisms that lack a general body plan or axis of symmetry that divides the body into mirror-image halves.
atmosphere
Biology; Cell biology
The envelope of gases that surrounds the Earth; consists largely of nitrogen (78%) and oxygen (21%).
atom nucleus
Biology; Cell biology
An atom's core; contains protons and one or more neutrons (except hydrogen, which has no neutrons).
