Chitin and chitosan are related polysaccharides that contribute to the rigidity of which organism's cell walls?

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Multiple Choice

Chitin and chitosan are related polysaccharides that contribute to the rigidity of which organism's cell walls?

Explanation:
Chitin and its deacetylated form, chitosan, are structural polymers that reinforce fungal cell walls. Chitin is a long chain of N-acetylglucosamine units linked by β-1,4 bonds, which stacks into strong microfibrils. These fibrils weave with other wall components to create a rigid, resilient matrix that helps fungi maintain shape and withstand internal turgor pressure. Chitosan, produced by removing acetyl groups from chitin, can form similar networks and modify wall properties, further contributing to rigidity. Bacteria rely on peptidoglycan for their walls, plants on cellulose, and Archaea on various other polymers, so chitin and chitosan are characteristically associated with fungi.

Chitin and its deacetylated form, chitosan, are structural polymers that reinforce fungal cell walls. Chitin is a long chain of N-acetylglucosamine units linked by β-1,4 bonds, which stacks into strong microfibrils. These fibrils weave with other wall components to create a rigid, resilient matrix that helps fungi maintain shape and withstand internal turgor pressure. Chitosan, produced by removing acetyl groups from chitin, can form similar networks and modify wall properties, further contributing to rigidity. Bacteria rely on peptidoglycan for their walls, plants on cellulose, and Archaea on various other polymers, so chitin and chitosan are characteristically associated with fungi.

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