Bio 110 Intro to Biology and Ecology – Flashcards
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What is the major method of transmission of infectious disease when using public transportation
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touching surfaces that sick people have touched
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In the mock-up of an airplane cabin, there were heated yellow bags where people would normally sit. Why?
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The bags are added to create an experimental model that would be most similar to an actual plane full of people
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Which setting has the shortest time span for air refreshment - in other words, which setting has the most frequent air exchange with fresh air?
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airplane cabin
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Why are children more likely to pick up germs in public places?Why are children more likely to pick up germs in public places?
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Children tend to be more tactile, and may not wash their hands as often as they should.
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Which of the following would be the best experimental design for a study looking at the risk of getting an infectious disease from using public transportation?
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Follow a very large set of people in order to reduce the effect of socioeconomic status. One group is comprised of people who frequently use public transportation, and the other group never uses public transportation. Compare the incidence of infectious disease between the two groups. Collect data without telling the participants too much about the study, so that they do not alter their normal behaviors.
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Which of the following would be the best experimental design for a study looking at the effect of hand-washing on the incidence of acquiring an infectious disease?
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Choose a setting where a large number of people consistently spend time, such as an office building. Randomly assign everyone to one of two groups. Ask one group to wash their hands every hour, and ask the other group to avoid washing their hands except when truly necessary. Compare the incidence of infectious disease between the two groups over a period of months or years.
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Which of the following is an example of discovery science?
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observing what other students in your class are wearing
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Which of the following is an example of hypothesis-driven science?
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testing whether or not dead batteries are preventing a TV remote from working
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Which of the following lists the steps of the scientific method in their proper order?
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observation, question, hypothesis, prediction, experiment
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A(n) _____________ is a testable explanation for an observation.
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hypothesis
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Imagine that your car is stalled and will not start. If you add gasoline to the tank to see if that helps, which step of the scientific method are you performing?
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experiment
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About how many people die in the U.S. each year from hospital-acquired infections?
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99,000
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You are an epidemiologist specializing in antibiotic-resistant strains of bacteria. For the best hope in saving a patient's life, you want to stop the infection before it gets where
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bloodstream
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Which of the following is true?
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Bacteria can mutate within the human body.
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Which of the following did scientists discover about Klebsiella pneumoniae?
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It remains latent in the body for longer than originally thought
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Which of the following would have most likely prevented so many patient deaths from Klebsiella pneumoniae at this National Institutes of Health hospital?
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More thorough disinfection techniques
