ATI RN
Ricci Maternity and Pediatrics NCLEX Question Immunization Questions
Question 1 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 2 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 3 of 5
Dual recognition: self MHC + peptide antigen
Correct Answer: B
Rationale: TCRαβ recognizes self MHC plus peptide antigen.
Question 4 of 5
In the processing pathway for intracellular antigens, the proteasome will viral protein molecules until peptides of residues are formed; these can bind to class I MHC molecules.
Correct Answer: C
Rationale: The proteasome breaks down intracellular (e.g., viral) proteins into peptides of 8-11 residues, suitable for MHC Class I binding.
Question 5 of 5
The B cell co-receptor can co-cluster with the BCR and increase the efficiency of signaling. Which of the following proteins does NOT make up the co-receptor?
Correct Answer: B
Rationale: The B cell co-receptor includes CD19, CD21, and CD81; CD20 is a separate B cell marker not part of the co-receptor.