Lesson 5 ·Class 9 · Aids to Health · Sort Lab
Antitoxins and Antiserum
Borrowed protection.
Sort each statement into what it describes.
Sorted 0/10
All items sorted — check each bin.
VS
Free play — sort every item into the bin it belongs in; each correct drop tells you why. Switch to when you're ready to test yourself.
A vaccine teaches the body; an antiserum lends it the answer. Teaching lasts; a loan must be repaid.
What this lesson covers
Challenges to clear
- Sort every statement.
- Fill the Antiserum column — ready-made antibodies, borrowed not built.
The task
Sort each statement into what it describes.
What this lesson covers
- Vaccine — Antigens given: Contains weakened, killed or partial germs (Antigens, not antibodies — the body must respond to them.); Given BEFORE exposure, as a precaution (It needs weeks to take effect, so it must be given in advance.); Protection lasts years, often for life (Because memory cells are formed.); BCG, DPT and oral polio drops (The standard childhood immunisation schedule.); Leaves memory cells behind (This is exactly what makes the protection durable.)
- Antiserum — Antibodies given: Contains ready-made antibodies from an immune animal or human (Horses are often used to produce antivenom and antitoxins.); Given AFTER exposure, as an emergency measure (Used after a snake bite, a rabid animal bite or a deep dirty wound.); Protection lasts only a few weeks (The borrowed antibodies break down and nothing replaces them.); Antivenom and tetanus antitoxin (There is no time to wait for the body to make its own.); Leaves no memory cells at all (Which is why it must be repeated if the person is exposed again.)
Hint
A vaccine teaches the body; an antiserum lends it the answer. Teaching lasts; a loan must be repaid.