Category: D

Enzymes that catalyze the removal of pairs of hydrogen atoms from their substrates. An enzyme that transfers hydrogen between chemical compounds. Enzymes that catalyze the removal of reducing equivalents (hydrogen ions) from carbon chains. An enzyme that catalyzes the oxidation of a specific substance, causing it to give up its hydrogen.  

Two or more codons that code for the same amino acid. For example, isoleucine is specified by the AUU, AUC, and AUA triplets. Since in this case more than one triplet codes for isoleucine the codons are called degenerate.  

A virus that, by itself, is unable to reproduce when infecting its host (cell), but that can grow in the presence of another virus. This other virus provides the necessary molecular machinery that the first virus lacks. A virus particle that, because of a lack of certain essential factors, is unable to replicate. Sometimes this…

The removal of amino groups from molecules. The removal of an amino acid from a molecule. Some amino acids can be converted to glucose in a process that begins. The process by which amino acids are broken down in the liver and urea is formed. A process, occurring in the liver, that occurs during the…

A unit of mass very nearly equal to that of a hydrogen atom (precisely equal to 1 .0000 on the atomic mass scale). Named after John Dalton (1766-1844) who developed the atomic theory of matter. It is 1.660 X 10-24 gram. A unit of molecular mass; 1/12 the mass of a 12C atom.  

A region within mitochondrial DNA in which a short stretch of RNA is paired with one strand of DNA, displacing the original partner DNA strand in this region. The same term is used also describe the displacement of a region of one strand of duplex DNA by a single-stranded invader in the reaction catalyzed by…

Gaze where one’s focus is directed.  

A muscle contraction in which the force exerted varies as the muscle shortens to accommodate change in muscle length and/or joint angle throughout the range of motion while moving a constant external load. Isotonic contraction.  

The ability to make necessary postural adjustments while the center of gravity and the base of support are in motion.  

A description of how a change in one variable is associated with a corresponding change in another variable. In epidemiology, as the amount of exposure to a risk factor increases, the rate of the effect of the exposure increases.