ATI RN
Pediatric Immune Disorder Test Questions Questions
Question 1 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.
Question 2 of 5
The two types of light chains are:
Correct Answer: D
Rationale: The two types of immunoglobulin light chains are lambda (λ) and kappa (κ).
Question 3 of 5
The biochemical structure of the T-cell receptor (TCR) of theαβ type (95% of human TCRs) is comparable to a immunoglobulin fragment, having very short cytoplasmic tails.
Correct Answer: C
Rationale: Theαβ TCR resembles a membrane-bound Fab fragment with short cytoplasmic tails.
Question 4 of 5
If both RAG-1 and RAG-2 mutations occur, which of the following is true?
Correct Answer: B
Rationale: Mutations in both RAG-1 and RAG-2 prevent T and B cell development, but NK cells remain unaffected.
Question 5 of 5
Antigen recognition molecule
Correct Answer: A
Rationale: The TCR is the primary antigen recognition molecule on T cells.