Immune System and Vaccines

The immune system's main role is to:

• Protect the body against viruses

• Protect the body against bacteria

• Protect the body against disease

• Protect the body against fungus

Vaccinations work because they:

• Mimic the immune system's way to protect the body

• Put disease into the blood stream

• Have been created by scientists

• All of the above

Vaccinations include:

• Suspensions of killed organisms

• Portions of killed organisms

• All of the above

Foreign cells in the body carry foreign proteins that the body recognises as 'non-self'. These are called:

• Antibodies

• Antigens

• Red Blood Cells

• White Blood Cells

In order to fight foreign invaders in the body, white blood cells create:

• Red blood cells

• Leukocytes

• Antigens

• Antibodies

Antibodies help the body to:

• Destroy pathogens

• Create antigens

• Destroy antibodies

• All of the above

When the body encounters a pathogen, antibodies are created that are specific to that pathogen. The next time the body encounters the pathogen, the response will be:

• Slower

• Faster

Vaccines deliberately expose humans to disease to create antibodies against the disease. We don't get sick from the vaccine like we would from the real disease because:

• The dosage is small

• The pathogen is dead or inactivated

• It is administered when we are healthy

• All of the above

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