Question

A farmer while working on his farm was bitten by a poisonous snake. He was rushed to a nearby health centre where the doctor gave him an injection to save his life.
(i) What did the doctor inject and why?
(ii) Name the kind of immunity provided by this injection.

Hint:

Immunity types: - Passive immunity: Pre-formed antibodies, e.g., anti-venom. - Active immunity: Antibodies produced by the body after exposure to antigens.

Answer 1

(i) The doctor injected anti-venom serum. This contains pre-formed antibodies that neutralize the snake venom, providing immediate relief and preventing further damage.
(ii) The immunity provided by this injection is passive immunity, as the antibodies are directly administered rather than being produced by the body.