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Chapter 5
Biology ch. 5 9th grade
8
Biology
9th Grade
10/24/2011

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Term
organic compounds
Definition
compounds used and made by living organisms 
Term
hydrocarbons
Definition
organic molecules composed of only hydrogen and carbon
Term
functional groups
Definition
a group of atoms within a molecule that interacts in predictable ways with other molecules
Term
monomer 
Definition
smaller molecular unit that is the building block of a larger molecule
Term
polymer
Definition
very long chain composed of repeating monomers
Term
dehydration reaction
Definition
the removal (de-) of a water (-hydro) molecule each time a monomer is added to a polymer chain.    
Term
hydrolysis reaction
Definition
the addition of water (hydro-) to a polymer which breaks down (-lysis) the polymer into monomers.
Term
carbohydrates
Definition
Sugar molecules made up of carbon, hydrogen, and oxygen
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