What are inorganic ions?
Help the enzyme and substrate bind together
Don’t directly participate in the reaction so aren’t used up or changed
What are coenzymes?
Organic molecules
Participate in the reaction and are changed by it
Often act as carriers moving chemical groups between different enzymes
Continually recycled during this process
Vitamins are often sources of coenzymes
What is a prosthetic group?
A cofactor that is tightly bound to the enzyme
What are cofactors?
Non-protein substances
Substances that allow enzymes to work