ATI RN
Chapter 15 The Lymphatic System and Immunity Review Questions Questions
Question 1 of 5
Which of the statements below is true for costimulatory molecules?
Correct Answer: B
Rationale: Costimulatory molecules (e.g., B7-CD28) enhance T cell survival and expansion, not initial interaction or IL-2 reduction.
Question 2 of 5
Which substances will not stimulate an immune response unless they are bound to a larger molecule?
Correct Answer: C
Rationale: Haptens need carriers to be immunogenic; antigens and viruses don't, miligen is fictitious.
Question 3 of 5
Which portion of antibody structure is occupied by variable chains?
Correct Answer: C
Rationale: Variable regions are at the upper (antigen-binding) end ; not lower or middle .
Question 4 of 5
Which of the following cells are involved in Innate Immunity?
Correct Answer: D
Rationale: All (A, B, C) are innate immunity cells; thus, D is correct.
Question 5 of 5
An immunoglobulin is a
Correct Answer: C
Rationale: Immunoglobulins are glycoproteins (proteins with carbohydrate attachments), critical for immune recognition.