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

7284 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Explain how the small intestine is adapted to its absorptive function (4)


What is the function of the cell Mitochondria?


Explain what the reflex arc is, how it is different to how the central nervous system normally works, and how the arc itself works.


Identify the various structures in a reflex arc in the context of a pin prick. What is the end response and why is this beneficial?


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