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BACTERIA AND VIRUSES How Bacteria Multiply….Exponentially! VOCABULARY • Active immunity: • Amoebic dysentery: • Antibiotic: •Antibody: •Antimicrobial product: •Carrier: •Contagion: •Disease: •Epidemic: •Infectious disease: •Influenza: • Noninfectious disease: • Pathogen: •Vaccine: •Vector: BACTERIAL GROWTH 1. A given bacteria reproduces (splits) every 5 minutes. If one bacterium invades the human body, how many bacteria will be present in the body after 3 hours? BACTERIAL GROWTH (CON’T.) 2. A given bacteria reproduces every 3 seconds. If 2 bacteria are present at the onset of invasion, how many bacteria are present after 1 hour? BACTERIAL GROWTH (CON’T.) 3. A given bacteria reproduces every 20 minutes. If 1 bacterium was present upon invasion, how long did it take for 128 bacteria to be present? BACTERIAL GROWTH (CON’T.) 4. A given bacteria reproduces every 3 hours. If 20 bacteria are present upon invasion, how long does it take for 10,240 bacteria to be present? GERMS AND “ME” • Create a web showing the people you have come in contact with in the last 24 hours. – place yourself in the middle of the web and each person contacted on the outside of the web.