ATI RN
Immune System Exam Questions Questions
Question 1 of 5
CD8 co-receptors:
Correct Answer: C
Rationale: CD8+ T cells (~35%) interact with MHC1, not MHCII; CD4 marks helper T cells.
Question 2 of 5
Contact with poison ivy would elicit which type of hypersensitivity reaction?
Correct Answer: D
Rationale: Poison ivy causes Type IV , T-cell-mediated; not immune complex , IgE , or cytotoxic .
Question 3 of 5
Which of the following immunoglobulin has the highest avidity of the immunoglobulins?
Correct Answer: B
Rationale: IgM has high avidity due to pentameric structure; others (A, C, D) have lower avidity.
Question 4 of 5
The common diseases caused by a poor immune system include ______?
Correct Answer: B
Rationale: Poor immunity leads to epidemic diseases ; autoimmune is immune overactivity.
Question 5 of 5
In agglutination reactions, the antigen is a in precipitation reactions, the antigen is a
Correct Answer: A
Rationale: Agglutination involves whole cells (e.g., bacteria), while precipitation involves soluble molecules (e.g., proteins), matching the reaction mechanisms.