ATI RN
Pediatric Immunizations NCLEX Questions Questions
Question 1 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 2 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 3 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 4 of 5
Which of the following are pluripotential, self-renewing CD34+ cells?
Correct Answer: A
Rationale: HSCs are pluripotent, self-renewing, and express CD34.
Question 5 of 5
Granulocyte colony-stimulating factor (G-CSF) causes an increase in the production of which of the following in the bone marrow?
Correct Answer: A
Rationale: G-CSF specifically increases neutrophil production.