Acquired Immunity — Prelims Questions

Which of the following characteristics is NOT associated with acquired immunity?

Which type of immunity is provided by the transfer of antibodies from a mother to her fetus across the placenta?

Which of the following cells is primarily responsible for cell-mediated immunity by directly killing infected cells?

Vaccination is an example of:

Which class of antibody is most abundant in serum and can cross the placenta to provide passive immunity to the fetus?

A person suffering from tetanus is given an antitoxin injection. This provides what type of immunity?