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SC.912.L.14.52

Learn the vital functions of the human immune system, including specific and nonspecific responses, vaccines, antibiotics, and herd immunity. Discover how herd immunity works in disease prevention through examples like vaccination against polio and flu shots. Gain insights into how vaccines help the body resist diseases by stimulating antibody production. Understand the pathogens that cause infectious diseases and how active immunity can be acquired through vaccination. Explore the importance of promoting hygiene and proper medical treatment for maintaining a healthy immune system.

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SC.912.L.14.52

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  1. SC.912.L.14.52 Explain the basic functions of the human immune system, including specific & nonspecific immune response, vaccines, and antibiotics.

  2. Herd immunity occurs when a high enough percentage of a population becomes protected against a disease so that the disease cannot spread in that population. Which of the following is the best example of herd immunity? • A school reduces the number of colds in children by encouraging frequent hand-washing • Polio is unknown in the Americas today because most children receive polio vaccines • Employees at a company are encouraged to get flu shots to avoid becoming sick and missing work • A county sprays trees to kill mosquitoes in order to prevent people from becoming sick after being bitten

  3. Many diseases have been nearly eliminated because of widespread vaccination. How do vaccines help the body to resist disease? • They alter the shapes of antigens • They stimulate the production of antibodies • They kill bacteria or prevent them from reproducing • They transfer antibodies from one organism to another

  4. Antibiotics can be used to treat some infectious diseases. Which pathogens cause these diseases? • Bacteria • Viruses • Toxins • Fungi

  5. By which process can a person acquire active immunity to a disease? • Healthy eating • Treatment with antibiotics • Vaccination • Following hygienic procedures

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