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chapter 1 book 3

TermDefinition
organism a living thing
cell the basic unit of structure and function in living things
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
stimulus 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 a stimulus
development the process of change that occurs during an organism's life to produce a more complex organism.
asexual reproduction a reproduction process that involves only one parent and produces offspring that are genetically identical to the parent.
spontaneous generation the mistaken idea that living things arise from nonliving sourses
controlled experiment an experiment 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 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 enviorment
classification the process of groping things based on their similaraties
taxonomy the scientific study of how living things are classified
binomial nomenclature the classification system in which each organism is given a unique two part scientific name indicating its genus and species
genus a classification gropping that consists of a number of similar closely related spiececs
species a group of simular organisms that can mate with others and produce offsprings that can also mate and reproduce
prokaryote a unicellular organism that lacks a nucleus and some other cell structures.
nucleus in cells a large oval organelle that contains the cell's genetic material in the form of DNA and controls many of the cell's activites
eukaryote an organism whose cells contain a nucleus
Created by: user-1975336
 

 



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