What is the role of the immunesystem

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Review Questions

1. What is the role of the immunesystem, and how can it protect humansfrom disease?

2. Why is the rapid detection of a disease important?

3. The ELISA linksan enzyme (horseradish peroxidase) to the secondaryantibody. What is the purpose of the enzyme?

4. Why is it necessary to include positiveand negative controlsamples in the assay in addition to the experimental samples?

5. Why is it necessary to wash the wells after each step?

6. When the primaryantibody was added to the wells, what happened if the samplecontained the antigen? What happened if it did not contain the antigen?

7. When secondary antibodywas added to the wells,what happened if the samplecontained the antigen? What happened if it did not contain the antigen?

8. If the samplegave a negative result (colorless) for the disease-causing agent, does this always mean that a person does not have the disease?What could cause a false-negative result?

9. If you testedpositive for diseaseexposure, did you have directcontact with one of the original infectedstudents? If not, what conclusions can you draw about the transmissibility of disease in a population?

10. Doyou agree or disagree with the followingstatement: "When you have sex with someone,you are having sex with everyone they have ever had sex with?" Explain.

Reference no: EM133629592

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