ATI RN
Immune System Multiple Choice Questions Questions
Question 1 of 5
Which complement component is involved in all complement pathways?
Correct Answer: B
Rationale: C3 is central to all pathways (classical, lectin, alternative), cleaved to initiate downstream effects, unlike C9 (MAC), C1q (classical), or C4 (classical/lectin).
Question 2 of 5
A characteristic of pathogen produced superantigens is that they:
Correct Answer: D
Rationale: Superantigens nonspecifically overactivate T cells via MHC-TCR bridging, evading specific responses.
Question 3 of 5
An anamnestic response involves a/an
Correct Answer: C
Rationale: Anamnestic (memory) response is rapid due to memory cells; effector and intensity are features, but C is specific.
Question 4 of 5
A tissue graft between two people who are not genetically identical is termed a:
Correct Answer: D
Rationale: Allograft is between non-identical humans; isograft is identical, xenograft is cross-species.
Question 5 of 5
The order of percent of total immunoglobulin in serum is
Correct Answer: D
Rationale: Serum order is IgG (~80%), IgA, IgM, IgD, IgE ; not other sequences (A-C).