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Unit #2 - Terms

WSHS - Biology - Smith/Tedder - Unit #2 Terms

QuestionAnswer
Chemical reaction process that changes one set of chemicals into another
Nucleic acid RNA and DNA
Base compound that produces hydroxide ions in solution
amino acid monomer of protein
polarity a slight negative charge at one end of a molecule and a slight positive charge at the other end; unequal sharing of electrons
acid pH levels that are below 7
base pH levels that are above 7
carbohydrates the main source of energy for living things; sugar and starches
proteins help carry out chemical reactions; transport substances in and out of cells; composed of amino acids; polymers of amino acids
lipids important parts of biological membranes
monosaccharide ”one sugar; glucose and fructose
polysaccharide many sugars; the most complex, that give the most energy; made up of chains of sugars; ie starches (bread, grain, pasta)
buffer help keep acids and bases at the correct level, ex. Tums
solution when one substance dissolves in another
solvent the liquid the substance is getting dissolved into, ie water
solute the substance that is getting dissolved, ie salt, sugar
adhesion attraction between unlike molecules
cohesion attraction between like molecules
pH scale that measures acids and bases
enzyme protein that acts as a biological catalyst
substrate reactant of an enzyme-catalyzed reaction
Created by: ktedder
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