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26 Cards in this Set
- Front
- Back
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data
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the information gathered from observations.
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inference
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a logical interperation based on prior knowledge or experience.
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hypothesis
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a proposed scientific explanation for a set of observations.
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controlled experiment
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only one variable is deliberately changed
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manipulated experiment
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deliberately changing a variable
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data
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the information gathered from observations.
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inference
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a logical interperation based on prior knowledge or experience.
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hypothesis
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a proposed scientific explanation for a set of observations.
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controlled experiment
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only one variable is deliberately changed
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manipulated experiment
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the variable that is deliberately changed
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responding variable
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variable that is observed and that changes in response to the manipulated variable
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theory
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as evidence for the numerous investigations buids up, a particular hypothesis may become so well supported
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Biology
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science that seeks to understand the living world
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cell
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a collection of living matter enclused by a barrier that seperates the cell from its surroundings
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sexual reproduction
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different parents unite to produce the first cell of the new organism
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asexual reproduction
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single parent
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metabolism
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the combination of chemical reactions through which an organism builds up or breaks down meterials as it carries out its life processes
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stimulus
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signal to which an organism responds
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homeostasis
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the rocess of maintaining a stable internal environment
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evolution
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ability of a group of organisms to change over time is invaluble for survival in a world that is always changing
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metric system
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a decimal system of measurement whose units are based on certain physical standards and are scaled on multiples of 10.
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microscopes
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devices that produce magnified images of structures that are too small to see with the unaided eye
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compound light microscope
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light passes through the speciman and this uses two lenses to form an image
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electron microscopes
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beams of electrons, rather than light, to produce images
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cell culture
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developes from the single orriginal cell
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cell frationation
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cells broken into pieces, bits added to liquid, placed in a tube, tube inserted into cetrifuge, spun up to 20000 times per minute, cells seperate denseer near bottom
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