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Apologia Biology - Module 5: The Chemistry of Life (2nd edition)

Vocabulary from Module 5, from Apologia Educational Ministries' High School Biology Course Exploring Creation With Biology, by Dr. Jay Wile and Marilyn F. Durnell (2nd edition).


There is also a crossword puzzle for this module at:

MatterAnything that has mass and takes up space
ModelAn explanation or representation of something that cannot be seen
ElementA collection of atoms that all have the same number of protons
MoleculesChemicals that result from atoms linking together
Physical changeA change that affects the appearance but not the chemical makeup of a substance
Chemical changeA change that alters the makeup of the elements or molecules of a substance
PhaseOne of three forms- solid, liquid, or gas- which every substance is capable of attaining
DiffusionThe random motion of molecules from an area of high concentration to an area of low concentration
ConcentrationA measurment of how much solute exists within a certain volume of solvent
Semipermeable membraneA membrane that allows some molecules to pass through but does not allow other molecules pass through
OsmosisThe tendency of a solvent to travel across a semipermeable membrane into areas of higher solute concentration
CatalystA substance that alters the speed of a chemical reaction but is not used up in the process
Organic moleculeA molecule that contains only carbon and any of the following: hydrogen, oxygen, nitrogen, sulfer, and/or phosphorous
BiosynthesisThe process by which living organisms produce larger molecules from smaller ones
IsomersTwo different molecules that have the same chemical formula
MonosaccharidesSimple carbohydrates that contain 3 to 10 atoms
DisaccharidesCarbohydrates that are made up of two monosaccharides
PolysaccharidesCarbohydrates that are made up of more than two monosaccharides
Dehydration ReactionA chemical reaction in which molecules combine by moving water
HydrolysisBreaking down complex molecules by the chemical addition of water
HydrophobicLacking any affinity to water
Saturated fatA lipid made from fatty acids that have no double bonds between carbon atoms
Unsaturated fatA lipid made from fatty acids that have at least one double bond between carbon atoms
Peptide bondA bond that links amino acids together in a protein
Hydrogen bondA strong attraction between hydrogen atoms and certain other atoms (usually oxygen or nitrogen) in specific molecules

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