Jose has no A and no B antigens on his red blood cells. Jose's blood type is:
Туре В
Type A
Type O
Туре АВ
The Correct Answer is C
A. Type B: Type B RBCs express B antigen, so “no A and no B” would not be type B.
B. Type A: Type A RBCs express A antigen, so not correct here.
C. Type O: Type O RBCs lack both A and B antigens (so they are “no A, no B”).
D. Type AB: Type AB RBCs express both A and B antigens, opposite of “no A and no B.”
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. AV node: The impulse travels from the SA node through atrial pathways to the AV node next—this is the normal sequence.
B. Bundle of His: Comes after the AV node, not immediately after the SA node.
C. Purkinje fibers: Terminal conduction fibers in the ventricles; far downstream from the SA node.
D. AV bundle: Another name for the Bundle of His, which still comes after the AV node.
Correct Answer is A
Explanation
A. To produce antibody molecules: plasma cells are differentiated B cells specialized for synthesizing and secreting antibodies.
B. To directly attack cells displaying antigens: cytotoxic T lymphocytes (and NK cells) directly attack antigen-bearing cells; plasma cells primarily secrete antibodies.
C. To increase the volume of the blood plasma: plasma cell activity does not change plasma volume; they produce proteins (antibodies), not fluid volume.
D. To produce interferon: many cell types secrete interferons in response to viral infection (e.g., infected cells, immune cells), but plasma cells are dedicated antibody producers.
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