BIOL1105:Midterm 2.pdf - BIOL 1105 A PRACTICE QUESTIONS FOR MIDTERM 2 This document has questions that didn’t make the cut to appear on midterm#2 It

BIOL1105:Midterm 2.pdf - BIOL 1105 A PRACTICE QUESTIONS FOR...

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BIOL 1105 A PRACTICE QUESTIONS FOR MIDTERM 2 Page 1 of 16 This document has questions that didn’t make the cut to appear on midterm #2. It is not as carefully edited as the actual test. Please note that this material is NOT intended to be an exact indication of which topics you will, or will not, see on the actual test. Instead, the purpose of this material is to provide you with practice for the type of questions on the test. For a guide to which topics you are expected to know, please the “Study Guide” recently added to cuLearn. There are 36 multiple-choice questions in this practice test. The actual midterm test will have 40 multiple-choice questions. For each question, there is ONE BEST answer. 1) Many animal species that live on islands have no fear of humans. The "Island tameness" hypothesis states that this phenomenon has evolved due a lack of predators in these isolated places. One way to test this hypothesis is to compare lots of island populations of certain species with their mainland populations of the same species. This is possible because there have been many independent events where a new island forms, and gets colonized by species from the mainland. Some people have therefore said that islands are a "natural experiment" that we can use to understand evolution. What's wrong with this statement? a)Nothing, the large number of islands in the world would provide enough replication to make this a perfectly good experiment b)Nothing, the data perfectly match the prediction that animals evolve to have less fear on islands with fewer predators c)The study would not really be an experiment, because it takes place outdoors d)The study would not really be an experiment, because we did not directly manipulate the number of predators, so there may be confounding factors e)None of the options are correct 2) Dr. Dakin's daughter is always getting sick and so she wonders if a child's social environment affects the number of colds acquired. She decides to test this hypothesis by studying two groups of pre-school children aged 3-4 years: (1) pre-schoolers who stay home with a babysitter or parent during the day, and (2) pre-schoolers who go to a daycare centre with lots of other kids every day. For group (1), she manages to recruit a random sample of 29 children from 29 different households in the Ottawa area, and she determines how often each child gets sick with a cold. For group (2), she thinks she can save time by going to the daycare centre that is on Carleton campus, and sampling all 32 of the pre-schoolers who go there. She determines the occurrence of colds for each child in the daycare group as well. What kind of study is this and why?
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  • Fall '18
  • Sue Bertram

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