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Module #5

Apologia Biology module 5 vocabulary

Anything that has mass and takes up space. Matter
An explanation or representation of something that cannot be seen. Model
A collection of atoms that all have the same number of protons. Element
Checmicals that result from atoms linking together. Molecules
A change that affects the appearance but not the chemical makeup of a substance. Physical change
A change that alters the makeup of the elements or molecules of a substance. Chemical change
One of three forms - solid, liquid, or gas - which every substance is capable of attaining. Phase
The random motion of molecules from an area of high concentration to an area of low concentration. Diffusion
A measurement of how much solute exists within a certain volume of solvent. Concentration
A membrane that allows some molecules to pass through but does not allow other molecules to pass through. Semipermeable membrane
The tendency of a solvent to travel across a semipermeable membrane into areas of higher solute concentration. Osmosis
A substance that alters the speed of a chemical reaction but is not used up in the process. Catalyst
A molecule that contains only carbon and any of the following: hydrogen, oxygen, nitrogen, sulfur and/or phosphorous. Organic molecule
The process by which living organisms produce larger molecules from smaller ones. Biosynthesis
Two different molecules that have the same chemical formula. Isomers
Simple carbohydrates that contain 3 to 10 carbon atoms. Monosaccharides
Carbohydrates that are made up of two monosaccharides. Disaccharides
Carbohydrates that are made up of more than two monosaccharides. Polysaccharides
A chemical reaction in which molecules combine by removing water. Dehydration reaction
Breaking down complex molecules by the chemical addition of water. Hydrolysis
Lacking any affinity to water. Hydrophobic
A lipid made from fatty acids that have no double bonds between carbon atoms. Saturated fat
A lipid made from fatty acids that have at least one double bond between carbon atoms. Unsaturated fat
A bond that links amino acids together in a protein. Peptide bond
A strong attraction between hydrogen atoms and certain other atoms (usually oxygen or nitrogen) in specific molecules. Hydrogen bond