Use the lock and key method to explain how enzymes function. Describe how different factors can affect the rate of reaction. (use the words = Enzyme, Catalyst, Rate of Reaction, Protein, Factor, pH, Temperature, Denature)

An enzyme is a protein which speeds up a chemical reaction. These reactions include photosynthesis, respiration and proteins. An Enzyme is seen as a biological catalyst. A catalyst increase the rate of a chemical reaction without itself being changed or effected.
Substrate molecules are fitted specific in the active site of an enzyme molecule. This is the lock and key method.
Enzymes are effected by the factors pH and temperature.
As the temperature increases, the rate of reaction in enzymes increase until it reaches an optimum of 37 degrees. As the temperature continues to increase further than 37 degrees the enzyme starts to denature changing the shape of the enzyme.
The active site of an enzyme can be affected by the pH. If the pH is different or changed, the enzyme will stop working.

	Created by hollboll over 10 years ago

Note on B4 - Process of Life questions, created by hollboll on 05/06/2014.