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Chap:1 lesson:1

What is life?

TermDefinition
cell the basic unit of structure and fucntion in all living things
organism a living thing
unicellular made of a single cell
multicellular consisting of many cells
metabolism the combination of chemical reactions through which an organism builds up or breaks down materials
stimulas any change or signal in the environment that can make an organism react in some way
response an action or change in behavior that occurs as a result of stimulas
development the process of change that occurs during an organism's life to produce a more complex organism
asexual reproduction a reproductive process that involves only one parent and produce offspring that are genetically identical to the parent
sexual reproduction a reproductive process that involves two parents that combine their genetic material to produce a new organism which differs from both parents
spontaneous generation this mistaken idea that living things arise from nonliving sources
controlled experiment an experiment in which only one variable is manipulated at a time
autotroph an organism that is able to capture energy from sunlight or chemicals and use it to produce its own food.
heterotroph an organism that cannot make its own food and gets food by consuming other living things
homeostasis the condition in which an organism's internal environment is kept stable in spite of changes in the external environment
Created by: 0003578stu
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