Extracellular Digestion - GCSE Biology Definition

Extracellular digestion is a process used by some organisms to break down food outside their cells. Unlike humans, who digest food within their stomach and intestines, these organisms release enzymes into their surroundings to break down large food particles into smaller molecules. Once digestion is complete, the smaller molecules are absorbed into their cells for energy and growth. This type of digestion is common in fungi and some bacteria, allowing them to feed on substances like decaying plants or dead animals. Understanding extracellular digestion provides insight into how different organisms obtain nutrients in their unique environments.