What is the relationship between antigens and antibodies?
The presence of antibodies triggers the production of antigens.
Antibodies can be foreign cells, proteins, or other large molecules. Antigens are large proteins made by B cells.
Antigens function to destroy or neutralize antibodies.
The presence of an antigen triggers the production of antibodies.
The Correct Answer is D
A. The presence of antibodies triggers the production of antigens: antibodies are produced in response to antigens, not the other way around.
B. Antibodies can be foreign cells, proteins, or other large molecules. Antigens are large proteins made by B cells: this reverses definitions: antigens are foreign molecules/cells that stimulate immune response; antibodies are proteins produced (by B cells) that bind antigens.
C. Antigens function to destroy or neutralize antibodies: antigens elicit antibody production; they do not act to destroy antibodies.
D. The presence of an antigen triggers the production of antibodies: antigens (foreign proteins, polysaccharides, cells) stimulate B cells to differentiate into plasma cells that produce specific antibodies.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. major histocompatibility complex: MHC (human leukocyte antigen, HLA) matching is critical because disparities trigger strong T-cell–mediated rejection responses.
B. antibody response: the recipient’s antibody response intensity matters clinically, but you don’t “match” antibody responses between donor and recipient; rather you try to match MHC and blood type.
C. blood type: blood type mismatches can cause hyperacute rejection and are important to consider, but MHC/HLA matching is the key determinant of long-term rejection risk.
D. sex and age: sex and age are not major determinants of graft compatibility; they are not the primary matching criteria used to reduce rejection risk.
Correct Answer is {"dropdown-group-1":"D"}
Explanation
Correct answer: Eosinophil
Eosinophils characteristically have a bilobed nucleus and large, refractile orange-red cytoplasmic granules that stain with eosin; those features identify the pictured granulocyte as an eosinophil (cells involved in parasitic defense and allergic responses).
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