Played As. 1  Pittsburgh Pirates (9800-9446 W-L, 1891 - 2015) - 5 World Championships, 9 Pennants, and 17 Playoff Appearances. 2  Pittsburgh Alleghenys (441-617 W-L, 1882 - 1890). 3  Overall (10241-10063 W-L, 1882 - 2015) - 5 World Championships, 9 Pennants, and 17 Playoff Appearances.
Enzymes are protein molecules that speed up a chemical reaction by lowering the activation. energy. In this experiment, the action of catalase was tested on different types of tissue extracts.n enzyme called catalase breaks down hydrogen peroxide into water and oxygen. In experiment number 3, we are comparing the action of catalase in different tissues by testing this hypothesis: The breakdown of hydrogen peroxide occurs at the same rate in all cells.
In some enzymes, no amino acids are directly involved in catalysis; instead, the enzyme contains sites to bind and orient catalytic cofactors. Enzyme structures may also contain allosteric sites where the binding of a small molecule causes a conformational change that increases or decreases activity.nzymes differ from most other catalysts by being much more specific. Enzyme activity can be affected by other molecules: inhibitors are molecules that decrease enzyme activity, and activators are molecules that increase activity. Many drugs and poisons are enzyme inhibitors.