Examlex
Substances are absorbed and retained against a concentration gradient, through the expenditure of energy, by _____________________.
Ferrites
A class of chemical compounds that are ferromagnetic metal oxides, often used in electronic devices for magnetic storage or as magnetic cores.
Unprocessed Magnetite
Naturally occurring magnetite iron ore that has not undergone any form of beneficiation or refinement.
Articulate Surface
A surface of a bone that makes a joint with another bone, allowing for varying degrees of movement.
Convex Surface
A curved surface that bulges outward, resembling the exterior of a sphere or circle.
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