ATI RN
ATI RN Test Bank
Chapter 15 The Lymphatic System and Immunity Review Questions Questions
Question 1 of 4
HIV, the virus that causes AIDS, infects:
Correct Answer: C
Rationale: HIV targets CD4+ helper T cells, weakening immunity.
Question 2 of 4
Central tolerance
Correct Answer: B
Rationale: Central tolerance induces B cell apoptosis in bone marrow; T cells exist but are deleted , B cells aren't in thymus , and anergy is peripheral .
Question 3 of 4
The binding energy between an antigen and antibody:
Correct Answer: B
Rationale: Antigen-antibody binding is reversible; follows mass action , not irreversible .
Question 4 of 4
In the above question, which antibody is extremely important in helping to eradicate this type of infection?
Correct Answer: D
Rationale: IgE fights parasites; IgM , IgA , IgG , and IgD have other roles.