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Bio Glossary

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Question
Answer
ORGANIC COMPOUND   A COVALENTLY BONDED COMPOUND THAT CONTAINS CARBON, EXCLUDING CARBONATES AND OXIDES.  
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FUNCTIONAL GROUP   PORTION OF A MOLECULE THAT IS ACTIVE IN A CHEMICAL REACTION AND DETERMINES THE PROPERTIES OF MANY ORGANIC COMPOUNDS.  
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MONOMER   SIMPLE MOLECULE THAT CAN COMBINE WITH OTHER LIKE OR UNLIKE MOLECULES TO AKE A POLYMER.  
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POLYMER   LARGE MOLECULE THAT IS FORMED BY MORE THAN FIVE MONOMERS, OR SMALL UNITS.  
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MACROMOLECULE   LARGE ORGANIC MOLECULE, USUALLY A POLYMER, COMPOSED FOR HUNDREDS OR THOUSANDS OF ATOMS.  
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CONDENSATION REACTION   CHEMICAL REACTION IN WHICH TWO OR MORE MOLECULES COMBINE TO PRODUCE WATER OR ANOTHER SIMPLE MOLECULE.  
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HYDROLYSIS   CHEMICAL REACTION BETWEEN WATER AND ANOTHER SUBSTANCE TWO FORM TWO OR MORE NEW SUBSTANCES, A REACTION BETWEEN WATER AND SALT TO FORM AN ACID OR BASE.  
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ADENOSINE TRIPHOSPHATE   COMPOUND THAT STORES A LARGE AMOUNT OF ENERGY.  
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CARBOHYDRATE   ORGANIC COMPOUND THAT IS MADE OF CARBON, HYDROGEN AND OXYGEN AND PROVIDES NUTRIENTS TO THE CELLS OF LIVING THINGS.  
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MONOSACCHARIDE   SIMPLE SUGAR THAT IS THE BASIC SUBUNIT, OR MONOMER, OF CARBOHYDRATE.  
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DISACCHARIDE   SUGAR FORMED FROM TWO MONOSACCHARIDES.  
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POLYSACCHARIDE   ONE OF THE CARBOHYDRATES MADE UP OF LONG CHAINS OF SIMPLE SUGARS; IT INCLUDES STARCH, CELLULOSE AND GLYCOGEN.  
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PROTEIN   ORGANIC COMPOUND THAT IS MADE OF ONE OR MORE CHAINS OF AMINO ACIDS AND THAT IS A PRINCIPAL COMPONENT OF ALL CELLS.  
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AMINO ACID   ORGANIC MOLECULE THAT CONTAINS CARBOXYL AND AN AMINO GROUP AND MAKES UP PROTEINS.  
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PEPTIDE BOND   CHEMICAL BOND THAT FORMS BETWEEN THE CARBOXYL GROUP OF ONE AMINO ACID AND THE AMINO GROUP OF ANOTHER AMINO ACID.  
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POLYPEPTIDE   LONG CHAIN OF SEVERAL AMINO ACIDS.  
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ENZYME   A TYPE OF PROTEIN THAT SPEEDS UP METABOLIC REACTIONS IN PLANTS AND ANIMALS WITHOUT BEING PERMANENTLY CHANGED OR DESTROYED.  
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SUBSTRATE   A PART, SUBSTANCE OR ELEMENT THAT LIES BENEATH AND SUPPORTS ANOTHER PART, SUBSTANCE OR ELEMENT. THE REACTANT IN REACTIONS CATALYZED BY ENZYMES.  
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ACTIVE SITE   THE SITE OF AN ENZYME THAT ATTACHES TO A SUBSTRACT.  
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LIPID   A LARGE, NONPOLAR ORGANIC MOLECULE, INCLUDING FATS AND STEROIDS: LIPIDS STORE ENERGY AND MAKE UP CELL MEMBRANES.  
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FATTY ACID   ORGANIC ACID THAT IS CONTAINED IN LIPIDS, SUCH AS FATS AND OILS.  
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PHOSPHOLIPID   A LIPID THAT CONTAINS PHOSPHOROUS AND THAT IS A STRUCTURAL COMPONENT IN CELL MEMBRANES.  
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WAX   A TYPE OF STRUCTURAL LIPID CONSISTING OF A LONG FATTY-ACID CHAIN THAT IS JOINED TO A LONG ALCOHOL CHAIN.  
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STEROID   A TYPE OF LIPID THAT CONSIST OF FOUR CARBON RINGS TO WHICH VARIOUS FUNCTIONAL GROUPS ARE ATTACHED AND THAT USUALLY HAS A PHYSIOLOGICAL ACTION.  
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NUCLEIC ACID   ORGANIC COMPOUND, EITHER RNA O DNA WHOSE MOLECULES ARE MADE UP OF ONE OR TWO CHAINS OF NUCLEOTIDES AND CARRY GENETIC INFO.  
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NUCLEOTIDE   IN A NUCLEIC-ACID CHAIN, A SUBUNIT THAT CONSIST OF SUGAR, A PHOSPHATE AND A NITROGENOUS BASE.  
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RIBONUCLEIC ACID   STORES AND TRANSFERS INFORMATION FROM DNA THAT IS ESSENTIAL FOR MANUFACTURING OF PROTEINS.  
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DEOXYRIBONUCLEIC ACID (DNA)   CONTAINS THE INFORMATION THAT DETERMINES THE CHARACTERISTICS OF AN ORGANISM.  
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