
1) Unit of catalytic activity
Found on
https://www.crosswordclues.com/clue/enzyme-unit

The enzyme unit (U) is a unit for the amount of a particular enzyme. One U is defined as the amount of the enzyme that produces a certain amount of enzymatic activity, that is, the amount that catalyzes the conversion of 1 micro mole of substrate per minute. The conditions also have to be specified: one usually takes a temperature of 25°C and the...
Found on
http://en.wikipedia.org/wiki/Enzyme_unit
No exact match found.