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BIOLOGY

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Term
Definition
Compound   A substance made up of atoms of two or more different elements joined by chemical bonds  
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Mixture   A combination of two or more substances that are not chemically combined  
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Solution   A homogeneous mixture of two or more substances  
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Element   A pure substance made of only one kind of atom  
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Base   A substance that decreases the hydrogen ion concentration in a solution.  
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fatty acids   Chains of carbon atoms bonded to hydrogen atoms  
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Atom   Basic unit of matter  
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hydrogen bond   Attraction between a slightly positive hydrogen atom and a slightly negative atom.  
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Solvent   A liquid substance capable of dissolving other substances  
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Solute   A substance that is dissolved in a solution.  
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Lipid   Energy-rich organic compounds, such as fats, oils, and waxes, that are made of carbon, hydrogen, and oxygen.  
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Monosaccharide   A single sugar molecule such as glucose or fructose, the simplest type of sugar.  
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Nucleus   Control center of the cell  
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Electron   A subatomic particle that has a negative charge  
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ionic bond   A chemical bond resulting from the attraction between oppositely charged ions.  
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Ion   A charged atom  
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covalent bond   A chemical bond that involves sharing a pair of electrons between atoms in a molecule  
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Molecule   A group of atoms bonded together  
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Cohesion   Attraction between molecules of the same substance  
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pH scale   measurement system used to indicate the concentration of hydrogen ions (H+) in solution; ranges from 0 to 14  
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Acid   any compound that forms H+ ions in solution  
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Ashesion   Force of attraction between different kinds of molecules  
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Buffer   Compound that prevents sharp, sudden changes in pH  
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Suspension   A mixture in which particles can be seen and easily separated by settling or filtration  
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Monomer   A simple compound whose molecules can join together to form polymers  
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Carbohydrate   Compound made up of carbon, hydrogen, and oxygen atoms; major source of energy for the human body  
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Nucleotide   Monomer of nucleic acids made up of a 5-carbon sugar, a phosphate group, and a nitrogenous base  
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Protein   A three dimensional polymer made of monomers of amino acids.  
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Polymer   A long molecule consisting of many similar or identical monomers linked together.  
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nucleic acids   DNA and RNA  
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amino acids   Building blocks of proteins  
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Created by: shakura122
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