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22 Cards in this Set

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