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Glossary of Biochemistry Terms
beginning with letter O
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oligonucleotide Tweet Definition of oligonucleotide Like Definition of oligonucleotide on Facebook
noun
  1. A short sequence of nucleotides (RNA or DNA), typically with twenty or fewer base pairs.
omega-3 fatty acid Tweet Definition of omega-3 fatty acid Like Definition of omega-3 fatty acid on Facebook
noun
  1. (chemistry) any polyunsaturated fatty acid having a double bond between the third and fourth carbon atoms from the end of the molecule farthest from the carboxylic acid; they are found in green vegetables and in the oils of fish such as salmon and mackerel; they are essential fatty acids, and seem to be beneficial in reducing the risk of heart disease
oxaloacetic acid Tweet Definition of oxaloacetic acid Like Definition of oxaloacetic acid on Facebook
noun
  1. (biochemistry) on of the constituents of the citric acid cycle, formed by the oxidation of malic acid and via the transamination of aspartic acid; an intermediate in the synthesis of amino acids and the metabolism of carbohydrates
  2. (chemistry) a colourless crystalline organic carboxylic acid, butan-2-one-1,4-dicarboxylic acid, COOH.CH2.CO.COOH
oxidase Tweet Definition of oxidase Like Definition of oxidase on Facebook
noun
  1. (enzyme) Any of many enzymes which catalyze oxidation reactions, especially ones using molecular oxygen.
oxidoreductase Tweet Definition of oxidoreductase Like Definition of oxidoreductase on Facebook
noun
  1. (enzyme) Any enzyme that catalyzes an oxidation-reduction (redox) reaction.
oxygenase Tweet Definition of oxygenase Like Definition of oxygenase on Facebook
noun
  1. (enzyme) An enzyme which catalyses biochemical reactions with oxygen.
oxyhemoglobin Tweet Definition of oxyhemoglobin Like Definition of oxyhemoglobin on Facebook
noun
  1. US spelling of oxyhaemoglobin.
oxytocin Tweet Definition of oxytocin Like Definition of oxytocin on Facebook
noun
  1. (hormone) A hormone that stimulates contractions during labour/labor, and then the production of milk.

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