ATI RN
Immune System Questions Questions
Question 1 of 5
The complement system can be activated by
Correct Answer: B
Rationale: Antigen-antibody complexes activate the complement system, enhancing pathogen destruction, not mediators, membranes, or T cells alone.
Question 2 of 5
Which of the following statements correctly describes the exogenous pathway of antigen processing?
Correct Answer: A
Rationale: The exogenous pathway processes extracellular antigens for MHCII, activating CD4+ T cells, not cytosolic (endogenous) or TAP/proteasome-dependent.
Question 3 of 5
T cells that have a β T cell receptors:
Correct Answer: B
Rationale: αβ T cells (95% of T cells) express CD4 or CD8, require MHC, and drive adaptive immunity.
Question 4 of 5
Which DOES NOT provide long-term immunity?
Correct Answer: B
Rationale: Passive immunity is short-term, relying on transferred antibodies; active immunity (A, C) generates long-term memory.
Question 5 of 5
Type II hypersensitivity is due to:
Correct Answer: D
Rationale: Type II involves antibodies (IgG/IgM) against mismatched cells; not IgE , T cells , or pollen .