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the small amount of air that always remains in the lungs during breathing.
long threads of genetic material (DNA and histone) found in the nucleus of a non-dividing cell...
a ring of muscle that controls the passage of substances through a tube or body opening.
the first step of cellular respiration in which glucose is converted to pyruvic acid with small...
the sequence of events relating to the flow of blood or blood pressure in the heart that occurs...