Which of the following statements is incorrect or false?
A) Class I MHC molecules are built into the plasma membranes of all body cells.
B) Class II MHC molecules appear only on the surface of antigen-presenting cells, thymic cells, and T cells that have been activated by exposure to antigens.
C) Haptens lack immunogenicity unless attached to protein carriers.
D) MHC proteins are the cell's identity markers.
B
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A flattened lens
A. is necessary for distant vision. B. is necessary for near vision. C. is necessary for both near and far vision. D. reflects light rays. E. only functions with color vision.
The melanocytes in very dark skin
A) are more abundant than they are in light skin. B) lack pigment but shrivel up and turn black. C) contain many small pigment granules. D) contain single, large, pigment granules.
Muscle fatigue is most likely due to an accumulation of ______ ______
Fill in the blank(s) with correct word
Diuril would MOST likely be prescribed to a patient with:
A) congestive heart failure. B) persistent hypokalemia. C) a decreased cardiac output. D) vasoconstriction-induced hypertension.