| apoenzyme | (noun) a protein that combines with a coenzyme to form an active enzyme | - |
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| benzyl | (noun) the univalent radical derived from toluene | Synonyms: benzyl group, benzyl radical |
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| benzylpenicillin | (noun) the penicillin that constitutes the principal component of many commercial antibiotics | Synonyms: penicillin G |
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| chlorobenzylidenemalononitrile | (noun) a tear gas that is stronger than CN gas but wears off faster; can be deployed by grenades or cluster bombs; can cause skin burns and fatal pulmonary edema | Synonyms: CS gas |
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| coenzyme | (noun) a small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes | - |
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| enzyme | (noun) any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions | - |
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| enzymologist | (noun) a person who is trained in or engaged in enzymology | - |
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| enzymology | (noun) the branch of biochemistry dealing with the chemical nature and biological activity of enzymes | - |
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| frenzy | (noun) state of violent mental agitation | Synonyms: craze, delirium, fury, hysteria |
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| proenzyme | (noun) any of a group of compounds that are inactive precursors of enzymes and require some change (such as the hydrolysis of a fragment that masks an active enzyme) to become active | Synonyms: zymogen |
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