ATI RN
Pediatric Immunizations NCLEX Questions Questions
Question 1 of 5
is frequently found on the surface of B cells co-expressed with These two classes are co-expressed not by class switching but by alternative processing of a primary RNA transcript. Both molecules expressed on the single mature B cell have the same binding specificity for antigen.
Correct Answer: B
Rationale: IgD and IgM are co-expressed on mature B cells via alternative RNA processing, sharing antigen specificity.
Question 2 of 5
The TCR binds with , and the relatively surface of the TCR interacts with its ligand.
Correct Answer: D
Rationale: The TCR binds both MHC and peptide antigen with a flat surface for recognition.
Question 3 of 5
Which of the following is the cellular receptor for HIV attachments to T cells?
Correct Answer: C
Rationale: CD4 is the primary receptor for HIV attachment to T cells.
Question 4 of 5
Which of the following is NOT a structural chain in class I MHC?
Correct Answer: A
Rationale: Class I MHC includes α1, α2, α3, and β2-microglobulin, but not β1.
Question 5 of 5
Which of the following is true regarding immunoglobulin and T-cell receptor (TCR) proteins and gene segments?
Correct Answer: A
Rationale: Heavy chains (VDJ) are analogous to β/δ TCR chains; light chains (VJ) are analogous to α/γ TCR chains.