Bio Chapter 1 – Flashcards

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question
Which of the following sequences correctly lists life's hierarchy of levels of organization from lowest to highest?
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Molecule, organelle, cell, tissue, organ, organism
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What is the appropriate term for a group of all the individuals that can mate with each other living within a specified area?
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Population
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At which point is a scientific investigator most likely to use deductive reasoning?
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In establishing a test of a hypothesis
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Why can a hypothesis never be proven to be true?
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There may always be alternative untested hypotheses that might also account for the results.
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With evolution as the core theme of biology, we can explain traits shared by organisms as evidence of and traits that differ among organisms as evidence of .
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descent from a common ancestor; adaptation through natural selection
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Which of the following is a prokaryotic domain?
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Archaea
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Which of the following observations and inferences led Charles Darwin to his theory of natural selection as a mechanism for evolution?
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Darwin synthesized his theory of natural selection from all of the listed observations and inferences.
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Which of the following statements best distinguishes hypotheses from theories in science?
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Hypotheses usually are relatively narrow in scope; theories have broad explanatory power.
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The process that accounts for the unity and the diversity of life is .
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evolution
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Which of the following would be an experimental means to investigate whether bean plants require an environmental source of sodium?
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Compare the growth and survival of bean plants in a growth medium containing sodium and in an identical growth medium completely lacking sodium.
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Emergent properties of living systems are defined as properties that .
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are due to the arrangement and interactions of parts as complexity increases
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A scientific theory is .
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a well-supported concept that has broad explanatory power
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A company was testing a new drug it thought would help decrease the risk of transmission of a particular virus from mother to fetus. In an experiment to test the drug, an investigator gave 400 pregnant female rats a small dose of the experimental drug and inoculated each with the virus. At the same time, 400 other pregnant rats were inoculated with the virus but not administered the drug. Of the rat pups born to the females that received both the virus and the drug, 203 showed no symptoms of infection; 205 rat pups born to the virus-only females showed symptoms. From these data, we can best conclude .
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that the drug has little effect on viral transmission at the given dosage
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A controlled experiment is one that .
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tests experimental and control groups in parallel
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How is the information encoded in DNA actually used by organisms?
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The information in DNA is transcribed to RNA and then translated into protein.
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Eukaryotic organisms that decompose dead organisms and absorb dissolved nutrients from their surroundings would be found in which kingdom?
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Fungi
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Which of the following is an example of qualitative data?
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The fish swam in a zigzag motion.
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Energy an ecosystem, whereas chemical elements .
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flows through; cycle within it
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What is the primary source of energy that makes life on Earth possible?
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The Sun
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Which of the following is the fundamental unit of structure and function in living organisms?
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Cell
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All the organisms on your campus make up .
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a community
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Two garden plots were planted with corn. The soil was similar in each, and equal amounts of water were applied to each plot. One plot was fertilized, and the other was not. The experimenters measured the yield as bushels of corn from each plot. The corn in the plot that did not receive the fertilizer was the .
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control group
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Which of the following statements is an example of correct inductive reasoning?
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We conclude that all animals require organic molecules as nutrients because, over centuries of study, we have found no animals that can survive without organic molecules acquired through feeding.
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Radon is a radioactive gas that seeps into homes from the soil. It is thought to be a cause of lung cancer. A research team investigates this hypothesis. Researchers gather large amounts of data on basement radon concentrations and lung cancer rates and conclude that the more radon there is in a home, the more likely are people living in the home to develop lung cancer. After the study is published, other researchers criticize it by asserting that the studied neighborhoods with higher radon concentrations also have a higher percentage of older people and a higher percentage of cigarette smokers than the low-radon neighborhoods. Both advanced age and cigarette smoking increase the risk of lung cancer. This criticism, if correct, shows that the radon study suffered from .
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uncontrolled variables
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