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WSHS - Biology

WSHS - Biology Fall 2010 - Unit 2 - Smith/Tedder

QuestionAnswer
cohesion attraction between like molecules
adhesion attraction between unlike molecules
solution when one substance dissolves in another
solute the substance that is getting dissolved i.e. salt, sugar
solvent the liquid the substance is getting dissolved into i.e. water
suspension mixture of water and nondissolved materials
pH scale that measures acids and bases
acid pH levels that are below 7
base pH levels that are above 7
buffer help keep acids and baes at the correct level i.e. Tums
carbohydrate the main source of energy for living things; sugar and starches
monosaccharide one sugar; glucose and fructose
polysaccharide many sugars; the most complex that give the most energy; made up of chains of sugars i.e. starches (bread, grain, pasta)
glycogen a polysaccharide also called a starch - how plans and animals store excess sugar
starch a complex form in which some plants make food
lipid important parts of biological membranes
nucleic acid RNA or DNA
nucleotide monomer of nucleic acids made up of a 5-carbon sugar; a phosphate group and a nitrogenous base
protein help carry out chemical reactons; transport substances in and out of cells; composed of amino acids; polymers of amino acids
amino acid monomer of protein
chemical reaction process that changes one set of chemical into another
activation energy energy needed to get a reaction started
enzyme protein that acts as a biological catalyst
substate reactant of an enzyme-catalyzed reaction
Created by: ktedder
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