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science

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TermDefinition
organism something that has all characteristics of life
cell the smallest unit of life
unicellular a living thing that is made up of only one cell
multicellular a living thing that is made up of two or more cells
homeostasis the ability to maintain constant internal conditions when outside conditions change.
binomial nomenclature a naming system that gives each organism a two word scientific name
species a group of organisms that have similar traits and are able to reproduce fertile offspring.
genus a group of similar species
dichotomous key a series of descriptions arranged in pairs that leads the user to the identification of an unknown organism.
cladogram a branched diagram that shows the relationships among organisms,including ancestors.
light microscope use light and lenses to enlarge an image of an object
compound microscope a light microscope that uses more than one lens to magnify an object.
electron microscope use a magnetic field to focus a beam of electrons through an object or onto an objects surface.
cell theory the theory that states that all living things are made of one or more cells the cell is the smallest unit of life and now all new cells come from preexisting cells
Macromolecule a substance in cells that forms when many small molecules join together
nucleic acid a macromolecule that forms when long chains form molecules called nucleotides join together
protein a long chain of amino acid molecules contains carbon,hydrogen,oxygen,nitrogen and sometimes sulfer.
lipid a large macromolecule that does not dissolve in water
carbohydrate a macromolecule made up of two or more sugar molecules which are composed of carbon,hydrogen,and oxygen usually the bodys major source of energy.
Created by: dee27
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