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Reactant of an enzyme-catalyzed reaction

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Protein catalyst that speeds up the rate of specific biological reactions.

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Substance that speeds up the rate of a chemical reaction.

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Compound with an amino group on one end and a carboxyl group on the other end.

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Macromolecule that contains carbon, hydrogen, oxygen, and nitrogen, needed by the body for growth and repair.

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Macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorous.

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Macromolecules made mostly from carbon and hydrogen atoms; includes fats, oils, and waxes.

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Compound made of carbon, hydrogen, and oxygen atoms; types of nutrients that are the major source of energy to the body.

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A molecule composed of many monomers, makes up macromolecules.

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Small chemical unit that makes up a polymer.

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Compound that produces hydroxide ions (OH-) in solution; solution with a pH of more than 7.

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Compound that forms hydrogen ions (H*) in solution; a solution with a pH of less than 7.

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Force of attraction between different kinds of molecules.

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Attraction between molecules of the same substance.

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A single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of the atom.

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Type of bond between atoms in which electrons are shared.

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Chemical bond formed when one or more electrons are transferred from one atom to another.

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Atom that has a positive or negative charge.

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One of several forms of a single element, which contains the same number of protons but different number of neutrons.

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The basic unit of matter.