Biology: Concepts and Applications (MindTap Course List)
Biology: Concepts and Applications (MindTap Course List)
9th Edition
ISBN: 9781285427812
Author: Cecie Starr, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 23, Problem 1SQ
Summary Introduction

To determine:

Whether the statement “Animal cells have chitin walls.” is true or false.

Introduction:

Chitin is a chemical compound which is present in the cell walls of the fungi. It is a fibrous substance made up of polysaccharides. It is a derivative of glucose. Chitin is present in the exoskeletons of various arthropods.

Expert Solution & Answer
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Answer to Problem 1SQ

Correct answer:

The given statement “Animal cells have chitin walls,” is false.

Explanation of Solution

Chitin is one of the major components of the protective armors of various organism such as spider, beetle, crab, and shrimps. Chitin is not present in the cell wall of the animals. The given statement is false because:

• The cells walls or cell membrane of the animals is made up of proteins, carbohydrates, and lipids. Chitin is present in the cell walls of the fungi and is the main component of the exoskeleton of crustaceans and arthropods.

Therefore, the animal cell does not contain chitin.

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