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General Biology Key Concepts

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이 집합의 용어 (17)

  • What is an organism?
    An organism is any living thing that can carry out life processes independently.
  • Define homeostasis.
    Homeostasis is the maintenance of a stable internal environment despite external changes.
  • What is metabolism?
    Metabolism includes all chemical reactions that occur within an organism to maintain life.
  • Explain biological regulation.
    Regulation refers to the control and coordination of life processes to maintain homeostasis.
  • Difference between unicellular and multicellular organisms.
    Unicellular organisms consist of a single cell; multicellular organisms have many specialized cells.
  • What distinguishes autotrophs from heterotrophs?
    Autotrophs produce their own food (e.g., plants); heterotrophs consume other organisms for energy.
  • Compare asexual and sexual reproduction.
    Asexual reproduction involves one parent producing genetically identical offspring; sexual reproduction involves two parents and genetic variation.
  • What is taxonomy?
    Taxonomy is the science of classifying organisms based on shared characteristics and evolutionary relationships.
  • Name the highest taxonomic categories in life's hierarchy.
    The highest categories include domains, which group all life into major categories like Bacteria, Archaea, and Eukarya.
  • Define species in biological terms.
    A species is a group of organisms that can interbreed and produce fertile offspring.
  • What is a null hypothesis?
    A null hypothesis states there is no effect or difference in an experiment.
  • What is an alternative hypothesis?
    An alternative hypothesis proposes that there is an effect or difference to be tested.
  • What is a controlled experiment?
    A controlled experiment tests one variable at a time while keeping other factors constant.
  • Define constants in an experiment.
    Constants are factors that remain the same throughout an experiment to ensure a fair test.
  • What is an independent variable?
    The independent variable is the factor that is changed or manipulated in an experiment.
  • What is a dependent variable?
    The dependent variable is the factor that is measured or observed in response to changes in the independent variable.
  • Difference between qualitative and quantitative data.
    Qualitative data describes qualities or characteristics; quantitative data involves numerical measurements.