Explain the role of enzymes in digestion? (4 marks)

Enzymes are biological catalysts that hydrolyse chemical bonds in biological molecules, such as lipids. Enzymes are important in digestion, as they aid the absorption of molecules across the lumen of the small intestine. Without enzyme action, our cells would not be able to utilise the energy contained in the food we consume, through respiration. This is due to food molecules being too large to cross the cell membrane.

IA
Answered by Intisar A. Biology tutor

7127 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

How does a high cholesterol diet increase the risk of coronary heart disease?


What is meant by the term genotype and how does this differ from the phenotype?


How are specialised cells different to normal body cells?


Why is the human circulation em called a double circulation system?


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