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29 Cards in this Set

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  • Back
homeostasis
relatively constant internal conditions that are different than their enviroment
atoms
fundamental elements of matter
molecules
cluster of atoms joined together
organelles
molecules assembled into tiny structures
cells
membrane-bounded units (contains organelles)
tissues
groups of similar cells that act as a structural and functional unit
organs
body structures composed of several different tissues that act as a structural and functional unit
organ systems
groups of organs
population
group of organisms of the same species living in the same place
species
all populations of a particular kind of organism
biological community
consists of all populations of different species living together in one place
ecosystem (ecological system)
biological community and the physical habitat within which it lives
emergent properties
novel properties resulted from way the components interact
deductive reasoning
applies general principles to predict specific results
inductive reasoning
uses specific observations to construct general scientific principles
hypothesis
a suggested explanation that accounts for the observations
experiment
the test of a hpothesis
variable
a facgtor that influences an outcome, observation, or process
test experiment
one variable is altered in a known way to test a particular hypothesis
control experiment
all variables are unaltered
reductionism
reduces a complex system into its working parts
theory
proposed explanation for some natural phenomenom; body of interconnected concepts, supported by scientific reasoning, and experimental evidence, that explains the facts in some area of study
evolution
genetic change in a population of organisms
artificial selection
change in the genetic structure of populations due to selective breeding by humans
natural selection
the differential reproduction of genotypes, caused by factors in the enviroment, leads to evolutionary change
homologous
have the same evolutionary origin, but differ in structure and function
analogous
have similar function, but different evolutionary origins
dexoyribonucleic acid (DNA)
encodes information that specifies what a cell is like
gene
specific sequence of several hundred to many thousand nucleotides; a discrete unit of information