An enzyme is a catalyst that helps to speed up the rate of a reaction by lowering the activation energy of a reaction. There are many enzymes in the human body, without which lots of important reactions would never take place. Cellular respiration is one example of a reaction that is catalysed by enzymes.
Sullivan Act Tim Sullivan, a major Irish criminal passed the Sullivan Act in 1911 to help his constituents rob strangers or to help them against Italian incomers. That is the crux of story that goes with a very early gun control law.
In 1948, Marlo Lewis, a producer, got the CBS network to hire Sullivan to do a weekly Sunday night TV variety show, Toast of the Town, which later became The Ed Sullivan Show. Debuting in June 1948, the show was originally broadcast from the Maxine Elliott Theatre on West 39th Street in New York City.