Examlex
An organism that cannot tolerate an oxygen environment is a(n) ______.
Hormones
Chemical messengers produced by glands that regulate physiological and behavioral activities.
Plasma
The liquid component of blood in which blood cells are suspended, consisting mostly of water, proteins, electrolytes, hormones, and nutrients.
A Antigens
Substances found on the surface of red blood cells that determine the A blood type in the ABO blood group system.
ABO Antigens
Proteins found on the surface of red blood cells that determine a person's blood type in the ABO blood group system.
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