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Module #5
Apologia Biology module 5 vocabulary
Question | Answer |
---|---|
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 |