What is an enzyme?

An enzyme is a type of protein that catalyses reactions that occur in the body. In many cases they are essential in order to allow reactions to occur under physiological conditions. There are many different types of enzymes, for example digestive enzymes break down carbohydrates, fats and proteins in the digestive system. Other enzymes are involved in the formation of molecules like DNA. 

RA
Answered by Rohin A. Biology tutor

4465 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Helicobacter pylori can cause stomach cancer. Describe how a person infected with Helicobacter pylori could also develop liver cancer.


What is the difference between anaerobic respiration and aerobic respiration?


What are the differences between mitosis and meiosis?


How do motor neurones work?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning