Chapter 2 Enzymes

This is quite a practical-heavy chapter, all about enzymes and how they work. 

You learned about the "lock and key" hypothesis of enzyme action at GCSE. Now you will learn about the "induced-fit model" of enzyme action.

You have to be able to say how the properties of an enzyme relate to the tertiary structure of its active site and its ability to combine with complementary substrate(s) to form an enzyme-substrate complex. You must understand what is meant by..

• The specificity of enzymes

• The effects of the following factors on the rate of enzyme-controlled reactions - enzyme concentration, substrate concentration, concentration of competitive and of non-competitive inhibitors, pH and temperature.