Bio 100- Quiz Chapter 1 – Flashcards
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Thinking scientifically relies on which of the following?
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objective observation and experimentation
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What is Step 4 in the scientific process?
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Conduct a critical experiment.
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In a recent study, patients treated with a genetically engineered heart drug were able to walk on a treadmill for 26 seconds longer than those not receiving the drug and showed no side-effects. Can we conclude that this drug is an effective treatment for heart disease?
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No. It is not clear that the proper controls were made.
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Scientific study always begins with:
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observations
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When conducting a critical experiment to test whether taking echinacea reduces the duration or severity of a cold, which of the following is NOT an important step?
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exposing some groups, but not others, to the cold virus
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A scientific theory is one that:
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is the result of all scientific experiments.
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In controlled experiments:
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one variable is manipulated while others are held constant.
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Which of the following is the BEST description of a control group in an experiment?
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The control group is identical to each test group except for one variable.
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All of the following are branches of biology EXCEPT:
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geology.
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Despite all of the intellectual analyses the scientific method gives rise to and objective conclusions it makes possible, it CANNOT:
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generate moral statements.
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Scientific data:
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are used to support or refute a hypothesis.
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A powerful way to demonstrate that observed differences between a treatment group and a control group truly reflect the effect of the treatment is for researchers:
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to conduct the experiment over and over again.
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Why is it that creationism can never be accepted as a scientific explanation of the origin of life?
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Because the ideas of creationism cannot be tested through experiment and observation.
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When a chewing gum manufacturer makes the claim, "Four out of five dentists surveyed recommend sugarless gum for their patients that chew gum," how many dentists need have been surveyed for the statement to be factually accurate?
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five
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The set of analytical and mathematical tools designed to help researchers gain understanding from the data they gather is called:
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statistics.
