sentence: Inhibitors slow down reactions.
sentences_before: There are many catalysts in our body which play an important part in many biochemical reactions. These are called enzymes. Most catalysts work by lowering the 'activation energy' of a reaction. This allows less energy to be used, thus speeding up the reaction. The opposite of a catalyst is an 'inhibitor'.
sentences_after: Some of them are found in snake venom and are dangerous for our nervous system or heart.
concept_name: inhibitor
headings: Catalysis