Development Of Scientific Knowledge

5 September 2022
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18 test answers

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question
Which career field is an applied science?
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B. Biotechnology
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Gregor Mendel is referred to as the father of which classical science?
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A. Genetics
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A scientist performed an experiment to test her hypothesis that a disease in horses was caused by a deficiency in an important mineral. The results did not support her hypothesis. However, some of her data showed an important change in one hormone. The scientist knew that the hormone was related to a different mineral, so she formed a new hypothesis. What is the most logical step for the scientist to take next?
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A. Design an experiment to test the new hypothesis.
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There is little sunlight at high latitudes during the winter, so few crops can grow even if temperatures are regulated. To address this problem, special lamps can be used in greenhouses. These lamps allow plants to grow during the winter months. Scientific knowledge of which topic was necessary to solve this problem?
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B. The colors of light that plants require for photosynthesis.
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Which data could most likely be accurately replicated by other scientists?
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C. Calculating the length of chicken eggs in millimeters.
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A scientist noticed that a dark-colored peppered moth is more visible on a light-colored background than a light-colored peppered moth. He wonders "Does this difference in visibility affect the survival rate of dark moths?" Which part of the scientific method does he need to carry out next?
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B. Form a hypothesis
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A hypothesis must be...
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A. Testable
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Why is the scientific method described as nonlinear?
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B. Scientists often repeat one or more steps several times.
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Which statement best explains the relationship between science and technology?
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A. Advances in technology lead to advances in science, which lead to advances in technology.
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Which hypothesis is testable?
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D. Plants make more sugar on sunny days than on cloudy days.
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Data must be considered valid for scientists to trust conclusions. Which is the best way to increase the validity of data in an experiment?
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B. Measure data in SI units.
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What is one way that early scientific practice differed from modern scientific practice?
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B. Early hypothesis were not tested by experimentation.
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A hypothesis must be...
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A. Testable
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Why do new scientific discoveries or technological developments often lead to new career opportunities?
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A. They can lead to new branches of science and technology.
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A scientist designed and conducted an experiment based on a hypothesis, and then formed a conclusion from her results. Next, she collected and analyzed more data and formed another conclusion. Which statement best justifies the fact that she skipped the hypothesis and experimental design steps of the scientific method?
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C. The scientist was repeating the experiment to improve the validity of her data.
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Which is an example of science playing a role in developing technology?
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D. The discovery that microwaves can pop corn, which led to the creation of microwave ovens.
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Why do scientists try to repeat other scientists' experiments?
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D. To see if the original results are reproducible.
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Which is the best example of a scientific discovery resulting from a new technology?
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C. The discovery of the structure of DNA, which occurred as the result of an X-Ray image of a DNA molecule.