PRINCIPLE: The breakdown of hydrogen peroxide into oxygen and water is mediated by the enzyme catalase. When a small amount of an organism that produces catalase is introduced into hydrogen peroxide, rapid elaboration of bubbles of oxygen, the gaseous product of the enzyme's activity is produced.RINCIPLE: The breakdown of hydrogen peroxide into oxygen and water is mediated by the enzyme catalase. When a small amount of an organism that produces catalase is introduced into hydrogen peroxide, rapid elaboration of bubbles of oxygen, the gaseous product of the enzyme's activity is produced.
Josh Keaton. Joshua Luis Wiener (born February 8, 1979), known by his stage name Josh Keaton, is an American actor, voice actor, singer, and record producer. 1 Early life.
Josh Hartnett. Biography by Rebecca Flint Marx. One of the crop of obscenely attractive young stars to pop up during the late 1990s, Josh Hartnett has the kind of strong-jawed, puppy-eyed looks that make him equally suited for both movie stardom and Tommy Hilfiger ads. Hartnett was born in St. Paul, Minnesota, on July 21, 1978.