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To find out how enzyme concentration affects the rate of an enzyme controlled reaction
- Words:
- 1144
- Submitted:
- Thu Jul 11 2002
Have a little read: ... Some information about enzymes and the "lock+key" hypothesis An enzyme is a type of protein found in all living cells. Enzymes act as biological catalysts, allowing all the chemical reactions of metabolism to take place, regulating the speed at which they progress, and providing a means of controlling individual biochemical pathways. Enzymes have a precise 3-dimensional shape. According to the 'lock-and-key' hypothesis, the substances upon which an enzyme acts (which are known as substrates) fit into a special slot in the enzyme molecule - the active site. A chemical reaction takes place at this site and the products are released, leaving the enzyme unchanged. This can be repeated 100,000 times per second. Enzymes are usually only effective for one substrate because each needs a different shaped active site. They function best in particular conditions of temperature and acidity (pH), and their action can be slowed or stopped by inhibitors. Many enzymes need a
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