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Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892

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BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

Distinguish between intracellular digestion and extracellular digestion.

Summary Introduction

To review:

The differences between extracellular and intracellular digestion.

Introduction:

Digestion is the process of breakdown of food molecules into smaller subunits, which are absorbed into the cells and fluids of the body and provide energy to carry out different metabolic processes. The enzymes, like protease, lipases, amylases, and nucleases, play a major role in the breakdown of food molecules. The enzymatic digestion can occur either inside or outside the cells of the body. Thus, it is categorized into intracellular and extracellular digestion.

Explanation

The differences between extracellular and intracellular digestion are listed below:

Intracellular digestion Extracellular digestion
In this process, the cells take in the food particles by endocytosis. The endocytic vesicles that contain food molecules fuse with the lysosome (hydrolytic enzyme containing vesicle). Hydrolysis produces the molecular subunits that pass into the cytosol from the vesicle. The undigested matter is released by exocytosis outside the cell...

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