True Statement:
* Enzymes are biological catalysts that speed up chemical reactions without being consumed in the process.
Explanation:
* Catalysts: Enzymes act as catalysts, meaning they lower the activation energy required for a reaction to occur, thereby speeding up the reaction rate.
* Biological: Enzymes are proteins (or in some cases, RNA molecules called ribozymes) produced by living organisms.
* Not Consumed: Enzymes are not used up in the reactions they catalyze. They can be reused repeatedly.
Other Common Statements about Enzymes:
* Enzymes are specific: Each enzyme typically catalyzes a specific reaction or a small set of related reactions.
* Enzymes are affected by temperature and pH: Enzymes have optimal temperature and pH ranges for activity. Outside these ranges, their activity can be reduced or even stopped.
* Enzymes can be regulated: The activity of enzymes can be controlled by various factors, including the presence of inhibitors or activators.
Let me know if you have any other questions about enzymes!
