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Grade 7 Chapter 2:1,2:2,2:3
Living things
22
Other
Not Applicable
07/28/2006

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Term
organism
Definition
a living thing
Term
multicellular
Definition
made up of more than one cell, often are specialized to perform a special function in the organism
Term
development
Definition
a change that occurs durng an organisms life that makes it more complex
Term
cell
Definition
basic unit of structures function in an organism
Term
unicellular
Definition
single celled organism, contains only one cell, can perform all functions
Term
stimulus
Definition
any change in the environment or surroundings that causes an organism to react
Term
response
Definition
a reaction to a change in the environment
Term
spontaneous generation
Definition
is the idea that living things came from non-living things
Term
autotrophs
Definition
captures sun's energy to make food
Term
heterotrophs
Definition
get their energy by feeding on others; they cannot make their own food
Term
homeostasis
Definition
an ability to keep the conditions inside their body the same even if their surroundings change
Term
classification
Definition
is the grouping of things according to how they are the same
Term
binomial nomenclature
Definition
a 2 part naming system of organisms
Term
taxonomy
Definition
the science of classifying living things
Term
genus
Definition
is a grouping of similar, closely related organisms - name is always capitalized
Term
species
Definition
animals of the same kind
Term
prokaryotes
Definition
do not have a nucleus
Term
eukaryotes
Definition
cells with a nucleus
Term
nucleus
Definition
a dense area in a cell that contains nucleic acids - tells the cell what to do
Term
cell
Definition
basic unit of structure and function in living things
Term
microscope
Definition
instrument that makes objects look larger
Term
Cell Theory
Definition
states all living things are made of cells; cells are the basic units of structure and function of living things;living cells only come from other living cells
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