ATI RN
Questions on Immune System Questions
Question 1 of 5
Isotypes refers to variations in the:
Correct Answer: A
Rationale: Isotypes (e.g., IgG, IgM) differ in heavy chain constant regions ; variable regions (B, D) determine specificity, not isotype.
Question 2 of 5
Which of the following immunoglobulin is the most abundant immunoglobulin in newborns?
Correct Answer: C
Rationale: IgG is abundant in newborns via maternal transfer; IgM rises later.
Question 3 of 5
Which of the following immunity is present when you are born?
Correct Answer: A
Rationale: Innate immunity is present at birth; acquired (B, C) develops later.
Question 4 of 5
A living microbe with reduced virulence that is used for vaccination is considered:
Correct Answer: D
Rationale: Attenuated means weakened. While making live attenuated vaccine the virulence of the microorganism is lost but its antigenic characteristics are retained.
Question 5 of 5
Interferons:
Correct Answer: D
Rationale: Interferons induce antiviral enzymes in target cells, not specific to viruses or limited to five families.