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Chapter 1 Post-Test

This activity contains 30 questions.

Question 1
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Given what we've seen regarding scientific progress in the past decade, what is likely to happen ten years from now?
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Question 2
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In which of the following situations would an understanding of science help inform your decision?
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Question 3
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Which of the following statements about scientific theories is most accurate?
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Question 4
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Whenever you propose a possible answer to a question, your proposal is said to be ________.
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Question 5
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For a hypothesis to be valid, it must ______.
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Question 6
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In a given experiment, what is a control?
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Question 7
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You observe that people in your biology class who wear hats tend to be taller than those who don't. Which of the following would be a reasonable hypothesis based on this observation?
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Question 8
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A well-designed experiment will ______.
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Question 9
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Which of the following is NOT a testable hypothesis?
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Question 10
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In Pasteur's experiment on spontaneous generation, he formulated two hypotheses: that living material is derived from nonliving material, and that living material is derived from living material outside a flask. Given what you know about his experiments and the nature of the scientific method, which of the following would be a reasonable alternative hypothesis?
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Question 11
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Which of the following statements is true about an experimental variable?
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Question 12
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What is the difference between a hypothesis and a theory?
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Question 13
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Staring out the window one day, you notice a line of ants crawling across the sidewalk. The line leads to a wet spot on the sidewalk and then back to the anthill in the ground. You are quite curious as to what prompts this behavior. If you were following the scientific method of investigation, what would your next step be?
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Question 14
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A city wants to determine whether fluoride is an effective additive against tooth decay. The city is large enough that there are several sources of water serving different areas. What is the best control for the experiment?
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Question 15
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A control group is critical to many experiments. Linus Pauling investigated the effectiveness of vitamin C in fighting the common cold. Pauling gathered 90 people who had colds. He divided the group into thirds. One-third of the group took 5,000 milligrams of vitamin C per day. Another third took a brand-name antihistamine. The final third used a cold-air vaporizer. The vitamin C group recovered faster, but the antihistamine group was more comfortable, and the vaporizer group had fewer colds. Does Pauling's experiment have a proper control group?
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Question 16
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People who are uninformed about evolution may state that it is "just a theory." What they often mean is that they believe it is simply a hunch: an unproven and little-supported notion about the nature of life on Earth. Why is this statement NOT accurate?
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Question 17
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As he begins an experiment, a research pharmacist states that drug XYZ is more effective for curing a certain disease than drug ABC. That statement is an example of ___________.
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Question 18
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A theory must ______________ if it is going to be accepted by the scientific community.
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Question 19
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What is the order of operations for the scientific method?
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Question 20
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A scientist wonders whether applying a certain fertilizer will increase the production of apples in an orchard. What is the variable to be tested in any experiment devised to answer this question?
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Question 21
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What did Pasteur specifically show in his classic nineteenth-century experiment?
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Question 22
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For a clinical trial to be effective, it must be_____ and _______.
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Question 23
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Why is a "pet rock" NOT really a live pet?
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Question 24
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Which of the following is the largest, most inclusive level of organization found in living things?
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Question 25
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Your backyard contains trees, grass, ants, mushrooms, birds, mosquitoes, and bacteria. This list describes ________.
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Question 26
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Which of the following CANNOT be used to differentiate living things from non-living ones?
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Question 27
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A cell is to a tissue as an organism is to a(n)_____.
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Question 28
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Why is evolution referred to as "biology's chief unifying principle"?
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Question 29
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In the early 1800s, scientists who studied living things were no longer called "naturalists" and became more like modern-day "biologists." What was the major factor that determined this change?
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Question 30
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What makes biology unique among sciences?
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