Immune System

What is the function of antibodies within the immune system?

• Antibodies kill off any antigen that enters the body.

• Antibodies are only made when you are given a vaccination for specific antigens.

• Antibodies bind to specific antigens to flag for destruction.

• Antibodies are part of an external defense mechanism.

What happens after the second time you are exposed to a pathogen?

• The body will not be able to fight off the pathogen quickly, because it knows how to get into the body easier.

• The body's immune system will react the same was as it did during the first exposure.

• The body can only be exposed to a pathogen a second time if you do not have a vaccine.

• The body will know how to fight off the pathogen quickly, because memory cells have been created after the first encounter.

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How do T cells differ from B cells?

• T cells fight pathogens by killing pathogens directly, while B cells fight pathogens by making antibodies.

• T cells only make memory cells, and B cells only make antigens

• T cells fight pathogens by making antibodies, while B cells fight pathogens by killing pathogens directly.

• T cells can only fight off pathogens the body has encountered once, and B cells can fight off any pathogen the body comes across.

Which of the following statements is TRUE about someone's immune system that has allergies?

• Body cells are dividing at an uncontrolled rate.

• The body is reacting to foreign antigens that are not dangerous to most people.

• T cells and B cells in the body cannot be activated.

• The body is mistaking its own cells for foreign antigens.

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What is the body's first line of defense against disease?

• skin

• blood

• antibodies

• enzymes

This allows us to develop an artificial immunity to a disease without ever getting

sick from the disease.

• antibiotics

• vaccines

• blood transfusions

_______________________________ are white blood cells that fight infection by “eating” or engulfing pathogens.

• T-cells

• B-cells

• Macrophages

How do antibodies function to fight infection?

• They mark the cell for duplication

• They mark the cell for reproduction

• They mark the cell for death

How are vaccinations able to help us develop immunity?

• Exposure to disease creates antibodies which make us immune

• Exposure to antibodies which makes us the disease immune to us

• Exposure to immunity's which make us antibodies to the disease

What do memory cells do?

• Kills the virus
• Eats the virus
• Patrol the area and make the immune system work faster next time.
• Makes antibodies