1) What is a widespread occurence of an infectious disease in a community at a particular time? a) pandemic b) epidemic c) virus d) bacteria 2) What is a widespread occurence of an infectious disease spread over different countries or even continents? a) pandemic b) epidemic c) virus d) bacteria 3) What is a hypothesis? a) what will not happen in your experiment b) a lame guess c) an estimate d) an educated guess about what will happen in your experiment 4) What does terminal mean when dealing with diseases? a) an end to your battery cable b) not that serious c) an illness that can not be cured and will likely lead to someone's death d) mild symptoms 5) What is the study of groups of people who have been exposed to something in the environment to see if they have been affected or comtaminated? a) epidemiology b) ecology c) epidemic d) pandemic 6) What is a living agent that spreads infectious pathogens to another living organism? a) host b) parasite c) vector d) fomite 7) __________________ uses science to study disease, injury, health, and disability in communities. a) pandemic b) epidemic c) epidemiology d) meteorology 8) The mean of a set of numbers is what? a) the biggest number in an ordered set of numbers b) the smallest number in an ordered set c) the average of all the numbers in an ordered set d) zero 9) The median of a set of numbers is what? a) the middle number in an ordered set of numbers b) the biggest number in an ordered set of numbers c) the least number in an ordered set of numbers d) zero 10) The mode of a set of numbers is what? a) zero b) the largest number in a set c) The smallest number in a set d) the number that occurs the most often 11) What is ecology? a) the study of the weather b) the study of relationships between living things and their environment c) the study of the water cycle d) study of life 12) What are vectors? a) parasites b) viruses c) bacteria d) A carrier of disease who infects others or their environment 13) What is a virus? a) the environment b) tiny particles that cause disease in people, animals, and plants c) the ecosystem d) things that are helpful to people 14) What is a reservoir? a) an infectious disease b) any person, animal, arthropod, plant, soil or substance (or combination of these) in which an infectious agent normally lives and multiplies c) a non-infectious disease d) an ecosystem 15) What is the mean of this set of numbers? 5,10,15,20,25 a) 15 b) 20 c) 5 d) 25 16) What is the median of this set of numbers? 5,10,15,20,25, 30, 35 a) 15 b) 20 c) 25 d) 30 17) What is the mode in this set of numbers? 1,1,1,2,2,3,3,3,3,4 a) 1 b) 2 c) 3 d) 4 18) What is a fomite? a) a virus b) objects that do not carry and spread diseases c) objects that carry and spread diseases d) a bacteria 19) What are microorganisms? a) large objects b) can be seen with the naked eye c) given as medicine for COVID d) a microscopic organism, especially bacteria, a fungus, or virus 20) What is incubation? a) the time you wait for the heater to warm up the room b) the time between when a person is exposed to an infectious agent and when they begin to develop symptoms c) being quarrantined d) having a cold 21) What does contagious mean? a) safe from harm b) not able to get sick c) can be spread from one person to another d) unable to get from another person 22) What is a pill that fights infections in plants and animals caused by bacteria. It either kills the bacteria or makes it where it can't spread. a) penicillin b) covid vaccine c) antibiotic d) antidepressant 23) How does the disease E.Coli spread? a) it doesn't b) very slowly c) by animals d) E. coli can spread from an infected person's hands to other people or even to objects

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