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General Biology: Nature of Science and Basic Concepts

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Termini in questo insieme (20)

  • What is the primary goal of science?

    The primary goal of science is to form theories, which are explanations based on evidence collected from many tested hypotheses.

  • Define hypothesis, theory, and law in science.

    Hypothesis: A testable and falsifiable proposed explanation or prediction.
    Theory: Well-supported explanations of why and how things happen.
    Law: Descriptions of what happens, often expressed mathematically.

  • What are the key characteristics of science?

    Focuses on the natural world, aims to explain it, uses testable ideas, relies on evidence, involves the scientific community, leads to ongoing research, and benefits from scientific behavior.

  • What is the difference between correlation and causation?

    Correlation measures the degree of relationship between two variables, while causation means one variable directly causes the other.

  • What is statistical significance in scientific research?

    A result is statistically significant if it is very unlikely to have occurred by chance alone, typically with a p-value less than 0.05.

  • What is sampling error and how can it be reduced?

    Sampling error is the difference between results from a subset and the whole population. It can be reduced by increasing sample size and using blinded studies.

  • Describe the scientific method steps.

    Make an observation, ask a question, form a testable hypothesis, make a prediction, conduct an experiment, analyze results, and report findings.

  • What is the difference between an experimental study and a correlation study?

    An experimental study manipulates variables to test hypotheses, while a correlation study observes relationships without manipulation.

  • What is the cell theory?

    All living organisms are made of cells, which are the smallest units that perform all life activities.

  • Compare prokaryotic and eukaryotic cells.

    Prokaryotic cells are simpler, smaller, and lack a nucleus and membrane-bound organelles.
    Eukaryotic cells have a nucleus and membrane-enclosed organelles.

  • What is gene expression?

    Gene expression is the process of converting information from DNA to RNA to protein.

  • What role does energy play in life processes?

    Life requires energy input, mainly from the sun, which is transformed by producers into chemical energy passed to consumers.

  • What are emergent properties in biology?

    New properties that arise from the arrangement and interaction of parts as biological complexity increases.

  • What is reductionism in biology?

    An approach that breaks complex systems into simpler components to study them more easily.

  • What is evolution according to biology?

    Evolution is the process by which living organisms are modified descendants of common ancestors, explaining unity and diversity of life.

  • What is microevolution and how does it fit a Biblical worldview?

    Microevolution is small-scale genetic changes within populations over time, observable in organisms and fossils, and compatible with a Biblical worldview.

  • What is abiogenesis?

    Theories explaining the origin of life from nonliving matter through chemical transformations.

  • Describe the RNA world hypothesis.

    RNA was the first self-propagating molecule capable of storing and transmitting genetic information and acting as a ribozyme, but not a cell.

  • What is the endosymbiosis theory?

    A large prokaryote engulfed a smaller one, which became mitochondria or chloroplasts, explaining the origin of eukaryotic organelles.

  • What are some limitations of the endosymbiosis theory?

    It does not explain the origin of most organelles and requires many precise conditions to occur.