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26 Cards in this Set

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