ATI RN
Pediatric Immune Disorder Test Questions Questions
Question 1 of 5
In a resting lymphocyte, B cells and T cells can be distinguished from each other via a simple blood smear.
Correct Answer: B
Rationale: A simple blood smear cannot distinguish B and T cells in resting states, as they require specific markers (e.g., CD19, CD3) for identification.
Question 2 of 5
What types of cell is class I MHC found on?
Correct Answer: D
Rationale: Class I MHC is expressed on nearly all nucleated cells to present intracellular antigens to CD8+ T cells.
Question 3 of 5
An epitope is generally used to refer to an area on a much larger molecule (e.g., a viral protein) with which an antibody can react.
Correct Answer: A
Rationale: An epitope is the specific region on an antigen recognized by antibodies or T cell receptors.
Question 4 of 5
Only has fragment antigen-binding (Fab) region
Correct Answer: C
Rationale: The Fab region alone binds antigens, lacking the Fc portion.
Question 5 of 5
IgM is structurally characterized as:
Correct Answer: D
Rationale: IgM is a pentamer, with five monomer units linked by disulfide bonds and a J chain.