Which of the following is True of active but not passive immunity?
A)acquisition and activation of antibodies.
B)proliferation of lymphocytes in bone marrow.
C)transfers antibodies from the mother across the placenta.
D)requires direct exposure to a living or simulated pathogen.
E)requires secretion of interleukins from macrophages.

Question

Quizplus · Accepted Answer

Active immunity requires direct exposure to a living or simulated pathogen, whereas passive immunity can be acquired through the transfer of preformed antibodies or immune cells.

Which of the Following Is True of Active but Not