ATI RN
Pediatric Immunizations NCLEX Questions Questions
Question 1 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 2 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.
Question 3 of 5
The invariant chain the empty peptide-binding groove. After vesicle fusion, the invariant chain is and peptides can enter the MHC class II grove.
Correct Answer: D
Rationale: The invariant chain blocks the MHC Class II groove to prevent premature peptide binding and is degraded after vesicle fusion to allow peptide loading.
Question 4 of 5
Which of the following is the correct order for a lymphocyte to be activated?
Correct Answer: B
Rationale: Lymphocyte activation follows: antigen recognition, receptor clustering, tyrosine kinase activation, and phosphorylation.
Question 5 of 5
Which of the following are pluripotential, self-renewing CD34+ cells?
Correct Answer: A
Rationale: HSCs are pluripotent, self-renewing, and express CD34.