ATI RN
Questions on the Immune System Questions
Question 1 of 5
Natural killer (NK) cells do not:
Correct Answer: D
Rationale: NK cells use perforin, proteases, and TNF to induce apoptosis, not just membrane damage.
Question 2 of 5
The AIDS virus:
Correct Answer: C
Rationale: HIV can be latent; it's not HTLV , targets CD4 , and is RNA .
Question 3 of 5
A patient gets a cold, and recovers a few days later. The patient's classmates come down with the same cold roughly a week later, but the original patient does not get the same cold again. This is an example of:
Correct Answer: A
Rationale: Recovery from infection is natural active; not artificial or passive (C, D).
Question 4 of 5
The spleen is much like a lymph node except that the spleen
Correct Answer: C
Rationale: The spleen filters blood, not lymph, and contains lymphocytes and phagocytes, unlike lymph nodes.
Question 5 of 5
Which of the following antibody mechanisms is correctly described?
Correct Answer: D
Rationale: All mechanisms are correct: chemotaxis attracts phagocytes, opsonization aids phagocytosis, lysis (via complement) ruptures cells.