Coenzymes. Coenzymes: A nonprotein component of enzymes is called the cofactor. If the cofactor is organic, then it is called a coenzyme. Coenzymes are relatively small molecules compared to the protein part of the enzyme. Many of the coenzymes are derived from vitamins.
twoâ²-step`. 1. a ballroom dance in duple meter, marked by sliding steps. 2. a piece of music for, or in the rhythm of, this dance.
The two-step test is NOT the usual PPD skin test in which you receive an injection of PPD. and the test area is observed one time at specific time frame. The two-step PPD test is used to detect individuals with past TB infection who now have. diminished skin test reactivity. This procedure reduces the likelihood that a boosted. reaction is later interpreted as a new infection.