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Glossary of Biochemistry Terms
beginning with letter S
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saponin Tweet Definition of saponin Like Definition of saponin on Facebook
noun
  1. (context, organic chemistry, steroid) Any of various steroid glycosides found in plant tissues that dissolve in water to give a soapy froth.
sequence Tweet Definition of sequence Like Definition of sequence on Facebook
noun
  1. A set of things next to each other in a set order; a series
  2. A series of musical phrases where a theme or melody is repeated, with some change each time, such as in pitch or length (example: opening of Beethoven's Fifth Symphony).
  3. A musical composition used in some Catholic Masses between the readings. The most famous sequence is the Dies Irae (Day of Wrath) formerly used in funeral services.
  4. (mathematics) An ordered list of objects.
verb (sequences, sequencing, sequenced)
  1. (transitive) to arrange in an order
  2. (transitive) to determine the order of things, especially of amino acids in a protein, or of bases in a nucleic acid
SER Tweet Definition of SER Like Definition of SER on Facebook
initialism
  1. State Emergency Relief
serine Tweet Definition of serine Like Definition of serine on Facebook
noun
  1. (amino acid) A nonessential amino acid, CH2OH.CH(NH2)COOH, found in most animal proteins, especially silk.
serotonergic Tweet Definition of serotonergic Like Definition of serotonergic on Facebook
adjective
  1. Having the quality of containing or releasing serotonin
serotonin Tweet Definition of serotonin Like Definition of serotonin on Facebook
noun
  1. (neurotransmitter) An indoleamine neurotransmitter, 5-hydroxytryptamine, that is involved in depression, appetite etc.
serum Tweet Definition of serum Like Definition of serum on Facebook
noun (pl2=sera)
  1. The clear yellowish fluid obtained upon separating whole blood into its solid and liquid components after it has been allowed to clot. Also called blood serum.
  2. Blood serum from the tissues of immunized animals, containing antibodies and used to transfer immunity to another individual, called antiserum.
  3. A watery fluid from animal tissue, especially one that moistens the surface of serous membranes or that is exuded by such membranes when they become inflamed, such as in edema or a blister.
  4. The watery portion of certain animal fluids, as blood, milk, etc; whey.
  5. In skin care it refers to an intensive moisturising product to be applied after cleansing but before a general moisturiser.
adjective
  1. Occurring or found in the of the blood.
sister Tweet Definition of sister Like Definition of sister on Facebook
noun
  1. a woman or girl who has the same parents as another person; a female sibling.
My little is an annoying pest.
  1. a female member of a religious community; a nun.
  2. a senior or supervisory nurse, often in a hospital.
  3. any woman or girl with whom a bond is felt through common membership of a race, profession, religion or organization, such as feminism.
Connie was very close to her friend Judy and considered her to be her .
    • 1985, w:Eurythmics, Eurythmics and w:Aretha Franklin, Aretha Franklin, Who"s Zoomin' Who?:
    • :song title Sisters Are Doin" It for Themselves
      1. (slang) a black woman
      2. (informal) a form of address to a woman
    • What"s up, ?
      1. (context, attributively) Of or relating to an entity that has a special or affectionate relationship with another
      publication
      city
verb
  1. (context, transitive, construction) To strengthen (a supporting beam) by fastening a second beam alongside it.
I"m trying to correct my sagging floor by sistering the joists.
somatostatin Tweet Definition of somatostatin Like Definition of somatostatin on Facebook
noun
  1. (hormone) A polypeptide hormone, secreted by the hypothalamus, that inhibits the production of certain other hormones.
sorbitol Tweet Definition of sorbitol Like Definition of sorbitol on Facebook
noun
  1. (chemistry) A polyhydric alcohol used as an artificial sweetener
specificity Tweet Definition of specificity Like Definition of specificity on Facebook
noun
  1. the state of being specific rather than general
  2. (statistics) the probability, in a binary test, of a true negative being correctly identified
sphingosine Tweet Definition of sphingosine Like Definition of sphingosine on Facebook
noun
  1. (biochemistry) An unsaturated aliphatic amino alcohol associated with the lipids of brain tissue
squalene Tweet Definition of squalene Like Definition of squalene on Facebook
noun
  1. (organic compound) A triterpene hydrocarbon found in shark liver oil and in human sebum; it plays a role in the biosynthesis of steroids.
steroid Tweet Definition of steroid Like Definition of steroid on Facebook
noun
  1. (biochemistry) A class of organic compounds having a structure of 17 carbon atoms arranged in four rings; they are lipids, and occur naturally as sterols, bile acids, adrenal and sex hormones, and some vitamins; many drugs are synthetic steroids.
  2. (bodybuilding) anabolic, Anabolic hormone used to promote muscle growth.
sterol Tweet Definition of sterol Like Definition of sterol on Facebook
noun
  1. (biochemistry) any member of a class of steroids containing a hydroxyl group in the 3-position of the A-ring; they are found in all animal and plant tissue and play an important role in hormone chemistry
substrate Tweet Definition of substrate Like Definition of substrate on Facebook
noun
  1. (biochemistry) The material or substance on which an enzyme acts.
  2. (biology) A surface on which an organism grows or is attached e.g. the rock surface of a rockpool is the substrate for a sessile organism such as a limpet.
  3. An underlying layer; a substratum.
  4. (context, linguistics) An indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population.
  5. (context, plating) A metal which is plated with another metal which has different physical properties.
  6. (context, construction) A surface to which a substance adheres.
sulfatase Tweet Definition of sulfatase Like Definition of sulfatase on Facebook
noun
  1. (enzyme) Any of several enzymes, in animals and bacteria, which catalyze the hydrolysis of organic sulfates.

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