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What is Life?
NA
18
Biology
7th Grade
09/29/2010

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Term
Organisms
Definition
Living things
Term
Cell
Definition
The basic unit of and function in a organism
Term
Unicellular
Definition
Single-celled organisms, include bacteria, And the most numerous organisms on Earth
Term
Multicellular
Definition
Organisms are composed of many cells
Term
Development
Definition
The process of change that occurs during the organism's life to produce a more complex organism
Term
Response
Definition
A organism reacts to a stimulus with a response - an action or change in behavoir
Term
Stimulus
Definition
A change in an organisms surrounding that causes the oraganism to react. Includes changes in temperature, light, sound, and other factors.
Term
Reproduce
Definition
Produce offspring that are similar to the parents
Term
spontaneous generation
Definition
The mistaken idea that living things arise from nonliving sources
Term
controlled experiment
Definition
A scientists carries out two tests that are identical in every respect except for one factor
Term
manipulated variable
Definition
The one factor that the scientists changes
Term
autotrophs
Definition
Self feeder
Term
heterotroph
Definition
Other, cannot make their own food
Term
homeostasis
Definition
The maintanince of stable internal conditions despite changes in surroundings
Term
photosynthesis
Definition
The process by taking energy from the sun and converting it into a storable form,usually glucose, which plants use for their own life source
Term
chemosynthesis
Definition
The process which some organisms that are not accessible to sunlight use to produce food, they produce energy from gases
Term
The 6 Characteristics of Living Things
Definition
Cellular Organization, The chemicals of life, energy use, growth and development,response to surroundings,reproduction
Term
The 4 needs of life
Definition
Energy, water, living space, stable internal conditions
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