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Diseases and Immunity

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Pathogens and transmission

Subtopic

Pathogens and transmission under Diseases and Immunity for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following pathogens causes Tuberculosis (TB)?

    A.

    A virus

    B.

    A bacterium

    C.

    A fungus

    D.

    A protoctist

  2. 2.

    Why is it dangerous to use a needle that has been used by someone else?

    A.

    The needle might be blunt

    B.

    It can transmit blood-borne pathogens like HIV or Hepatitis

    C.

    The metal of the needle might be cold

    D.

    It can cause a vitamin deficiency

  3. 3.

    Which of these describes a method of direct transmission of a pathogen?

    A.

    Pathogen transferred from an infected person via a handshake

    B.

    Pathogen transferred from a fly to food

    C.

    Pathogen transferred through a communal water tank

    D.

    Pathogen transferred through contaminated air in a room

Download the worksheet for Diseases and Immunity - Pathogens and transmission to practice offline. It includes additional chapter-level practice questions.

Antibodies and vaccination

Subtopic

Antibodies and vaccination under Diseases and Immunity for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    How do memory cells differ from regular lymphocytes?

    A.

    They are much larger

    B.

    They live much longer in the body

    C.

    They can only be found in the liver

    D.

    They do not have a nucleus

  2. 2.

    Which of the following is an example of artificial active immunity?

    A.

    Receiving a rabies vaccine after a bite

    B.

    Catching a cold from a friend

    C.

    Getting a polio vaccination as a child

    D.

    Receiving antibodies through breast milk

  3. 3.

    Which immune system component is responsible for the 'memory' of a previous infection?

    A.

    Platelets

    B.

    Memory lymphocytes

    C.

    Plasma proteins

    D.

    Phagocytes

Download the worksheet for Diseases and Immunity - Antibodies and vaccination to practice offline. It includes additional chapter-level practice questions.

Active and passive immunity

Subtopic

Active and passive immunity under Diseases and Immunity for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of these is a characteristic of artificial active immunity?

    A.

    It is achieved through vaccination.

    B.

    It provides immediate protection.

    C.

    It does not involve memory cells.

    D.

    It only lasts for a few days.

  2. 2.

    Why is it necessary to have multiple vaccinations for certain diseases like Tetanus?

    A.

    To keep the memory cell count high enough for protection.

    B.

    Because the first vaccine is always fake.

    C.

    To make the person allergic to the disease.

    D.

    To ensure the antibodies are turned into red blood cells.

  3. 3.

    Which process describes the transfer of antibodies from mother to child via the placenta?

    A.

    Natural passive immunity

    B.

    Artificial passive immunity

    C.

    Natural active immunity

    D.

    Artificial active immunity

Download the worksheet for Diseases and Immunity - Active and passive immunity to practice offline. It includes additional chapter-level practice questions.