ATI RN
Ricci Maternity and Pediatrics NCLEX Question Immunization Questions
Question 1 of 5
If alternative processing uses the first polyadenylation site, then what type of heavy chain mRNA is derived?
Correct Answer: D
Rationale: Using the first polyadenylation site results in μ (mu) heavy chain mRNA, encoding IgM.
Question 2 of 5
T cells the potential to express an alternative secreted form like the B-cell antigen receptor. Superantigens can activate T cells antigen processing and presentation.
Correct Answer: D
Rationale: T cells do not secrete receptors and superantigens activate them independently of antigen processing.
Question 3 of 5
CD4 and CD8 enhance the response of specific T cells, both by stabilizing the TCR-peptide-MHC complex and by bringing what type of protein kinase into the proximity of the cytoplasmic tails, thereby facilitating signal transduction and cell activation?
Correct Answer: D
Rationale: Tyrosine kinases (e.g., Lck) are brought into proximity by CD4 and CD8 for signal transduction.
Question 4 of 5
Which of the following is NOT a structural chain in class II MHC?
Correct Answer: C
Rationale: Class II MHC includes α1, α2, β1, and β2, but not α3.
Question 5 of 5
Dual recognition: self MHC + peptide antigen
Correct Answer: B
Rationale: TCRαβ recognizes self MHC plus peptide antigen.