LooseLeaf Benson's Microbiological Applications Laboratory Manual-Concise Version
LooseLeaf Benson's Microbiological Applications Laboratory Manual-Concise Version
14th Edition
ISBN: 9781259705236
Author: Alfred E Brown Ph.D., Heidi Smith
Publisher: McGraw-Hill Education
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Chapter 27, Problem 1SAQ
Summary Introduction

To explain: The reason why bacteria are resistant to hypotonic solutions, but animal cells are not.

Introduction: The hypotonic solution is defined as the medium in which the solute concentration is lower outside the cell when compared to the cell’s cytoplasm. The water from the environment enters the cells to balance the solute concentration.

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Explanation of Solution

Bacteria are resistant to hypotonic environments due to the presence of a rigid cell wall that gives protection to the membrane from damage against the osmotic pressure. It also prevents membrane disruption when there is diffusion of water across the cell membrane into that of the cell’s cytoplasm. On the other hand, the cell wall is absent in animal cells. This may cause the cells to burst under a hypotonic environment.

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Bacterial Structure and Functions; Author: Osmosis;https://www.youtube.com/watch?v=b15Hy3jCPDs;License: Standard youtube license