活かっ性せい

noun

activity; chemical activity

Technical chemistry use for the degree to which a substance, catalyst, enzyme, or similar agent is active or reactive.

• この触しょく媒ばいは低てい温おんでも高たかい活かっ性せいを示しめす。

  This catalyst shows high activity even at low temperatures.

• 加か熱ねつすると酵こう素その活かっ性せいが失うしなわれることがある。

  Heating can cause an enzyme to lose its activity.

noun-modifying (irregular)

active; chemically active

Prenominal or compound-forming technical use, as in terms such as 活性酸素 and 活性部位; often translated as active or reactive depending on the term.

• 活かっ性せい酸さん素そは細さい胞ぼうを傷きずつけることがある。

  Reactive oxygen species can damage cells.

• 薬くすりは酵こう素その活かっ性せい部ぶ位いに結けつ合ごうする。

  The drug binds to the enzyme's active site.