A Test That Is Reliable May Not Be Valid

question 46

True/False

A test that is reliable may not be valid.

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Definitions:

Thrombin

An enzyme in the blood that facilitates the conversion of fibrinogen to fibrin, playing a critical role in the clotting process.

White Blood Cells

Cells of the immune system involved in protecting the body against both infectious disease and foreign invaders by responding to pathogens and initiating immune responses.

Vein

(1) A blood vessel that carries blood from the tissues toward a chamber of the heart (compare with artery). (2) A strand of vascular tissue that is part of the network of conducting tissue in a leaf; also called a vascular bundle.

Heart

The heart is a muscular organ in most animals, including humans, which pumps blood through the blood vessels of the circulatory system, supplying oxygen and nutrients to the body while removing carbon dioxide and other wastes.