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26 Cards in this Set
- Front
- Back
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atom
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smallest unit of matter that cannot be broken down by chemical means
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element
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substance composed of a single type of atom
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compound
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substance that is made of mode than one kind of atom
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molecule
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group of atoms held together by covalent bonds
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ion
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electrically charged atom or molecule
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cohesion
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attraction between substances of the same type
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adhesion
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attraction between different substances
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solution
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homogeneous mixture of two or more substances
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acid
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compound that increases the concentration of hydrogen ions in a solution
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base
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compound that reduces the concentration of hydrogen ions in a solution
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carbohydrate
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organic compound composed of carbon, hydrogen, and oxygen; used by living things as an energy source
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monosaccharide
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simple sugar that is the base unit of carbohydrates
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lipid
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one of a family of nonpolar molecules that are not soluble to water; includes fats, phospholipids, and steroids
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proteins
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organic compounds made of amino acids
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amino acids
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organic molecule that is the building block of proteins
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nucleic acids
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organic molucule made of nucliotides
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nucleotides
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subunit of nucleic acids consisting of a nitrogenous base, a sugar, and a phosphate
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DNA
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double-stranded, helical nucleic acid that stores hereditary information
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RNA
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a type of nucleic acid involved in protein synthesis
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ATP
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organic molecule composed of a base, a sugar, and three phosphate groups that act as the main energy currency of a cell
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energy
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capacity for doing work the ability to move or change matter
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activation energy
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amount of energy required to start a chemical reaction
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enzyme
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substance that speeds up a chemical reaction
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substrate
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the substance with which an enzyme acts during a chemical reaction
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active site
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site on an enzyme that attaches to a substance
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via
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street
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