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Chapter 1 Vocabulary
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Chapter 1 Vocabulary

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    Chapter 1 Vocabulary Chapter 1 Vocabulary Presentation Transcript

    • science
    • science
      organized way of using evidence to learn about the natural world; also, the body of knowledge that scientists have built up after years of using this process
    • observation
    • observation
      use of one or more of the senses—sight, hearing, touch, smell, and sometimes taste—to gather information
    • data
    • data
      evidence; information gathered from observations
    • inference
    • inference
      logical interpretation based on prior knowledge and experience
    • hypothesis
    • hypothesis
      possible explanation for a set of observations or possible answer to a scientific question
      OR
      an educated guess
    • Spontaneous generation
    • Spontaneous generation
      hypothesis (disproven) stating that life could arise from nonliving matter
    • controlled experiment
    • controlled experiment
      a test of the effect of a single variable by changing it while keeping all other variables the same
    • manipulated variable
    • manipulated variable
      factor in an experiment that a scientist purposely changes; also known as independent variable
    • responding
      variable
    • responding
      variable
      factor in an experiment that a scientist wants to observe, which may change in response to the manipulated variable; also known as a dependent variable
    • theory
    • theory
      well-tested explanation that unifies a broad range of observations
    • biology
    • biology
      science that seeks to understand the living world
    • cell
    • cell
      collection of living matter enclosed by a barrier that separates the cell from its surroundings; basic unit of all forms of life
    • sexual reproduction
    • sexual reproduction
      process by which cells from two different parents unite to produce the first cell of a new organism
    • asexual reproduction
    • asexual reproduction
      process by which a single parent reproduces by itself
    • metabolism
    • metabolism
      set of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes
    • stimulus
    • stimulus
      a signal to which an organism responds
    • homeostasis
    • homeostasis
      process by which organisms maintain a relatively stable internal environment
    • ml
    • metric system
      ml
    • metric system
      decimal system of measurement based on certain physical standards and scaled on multiples of 10
      ml
    • microscope
    • microscope
      device that produces magnified images of structures that are too small to see with the unaided eye
    • compound light microscope
    • compound light microscope
      microscope that allows light to pass through a specimen and uses two lenses to form an image
    • Electron microscope
    • Electron microscope
      microscope that forms an image by focusing beams of electrons onto a specimen
    • cell culture
    • cell culture
      group of cells grown in a nutrient solution from a single original cell
    • cell fractionation
    • cell fractionation
      technique in which cells are broken into pieces and the different cell parts are separated