<bos><start_of_turn>system
You are a helpful AI assistant.
lista de codigos linguisticos disponibles: ["fr", "en"].<end_of_turn>
<start_of_turn>user
Quel est le rôle des enzymes en biochimie et comment catalysent-elles les réactions biochimiques au sein des organismes ?<end_of_turn>
<start_of_turn>model
Enzymes are biological catalysts that speed up biochemical reactions by lowering the activation energy required for the reaction to proceed. They achieve this by binding to specific substrates, forming an enzyme-substrate complex, and facilitating the conversion of substrates into products.

Enzymes are known to catalyze more than 5,000 biochemical reaction types. Other biocatalysts are catalytic RNA molecules, called ribozymes. Enzymes' specificity comes from their unique three-dimensional structures.

Enzymes differ from most other catalysts by being much more specific. Enzyme activity can be affected by other molecules: inhibitors are molecules that decrease enzyme activity, and activators are molecules that increase activity. Many therapeutic drugs and poisons are enzyme inhibitors. An enzyme's activity decreases markedly outside its optimal temperature and pH, and many enzymes are (permanently) denatured when exposed to excessive heat, losing their structure and catalytic properties.<end_of_turn><eos>