What is the function of the Immune System?

• Help germs invade your body

• Fight off sickness

• Make your nose run

• Give you diarrhea

To be "immune" means what?

• That you are infected

• That you are bald

• That you are more likely to get sick

• That you are protected from illness

What do antibodies do to pathogens?

• They destroy their cell walls

• They attach to them

• They change their binding site

• They ignore them

The graph at right shows antibody levels in two different patients who have just been infected with the same pathogen. Assume that all patients develop the same number of antibodies during their primary or secondary immune response. Which patient do you think just got the disease for the first time?

• Patient A

• Patient B

• Both patient A & patient B

• None of them

What function do memory cells have in our body?

• They help our immune system remember pathogens

• They store information in our short-term memory

• They send chemical signals from our blood to the brain

• All of the above

What part of the body does the image represent?

• human body

• antibody

• body cells

• pathogen

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

NGSS.MS-LS1-3

Which of the following is NOT a step in an immune response after infection?

• Pathogen invades  the body

• White blood cells  produce antibodies

• Pathogen gets  destroyed

• A vaccination is given

Which of the following statements is NOT true about antigens?

• They cause the production of antibodies

• They bind to antibodies

• They are found on the surface of pathogens

• They are the same for every pathogen

When are antibody numbers higher?

• Before the primary immune response

• During the primary immune response

• During the secondary immune response

• After the secondary immune response

You repeat an experiment similar to what you did in class, where salt represents the body’s cells and iron filings represent pathogens, but find a way to measure their masses separately. The results of two different simulations are shown in the table.

Which simulations represents someone with an autoimmune disease?

• Simulation 1

• Simulation 2

• Both Simulation 1 and simulation 2

• None of the simulations

Tags

NGSS.HS-LS1-3