The plant cell wall is made up of

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Study for the 9th Grade Biology SOL Test. Prepare with flashcards and multiple choice questions, each featuring hints and explanations. Get ready for your exam!

Multiple Choice

The plant cell wall is made up of

Explanation:
The plant cell wall’s main structural component is cellulose, a polymer of glucose units linked by beta-1,4 glycosidic bonds that assemble into strong, fibrous microfibrils. This network gives the wall rigidity and the ability to resist osmotic pressure, helping the plant maintain its shape. Chitin is found in fungi and some animals, not in plants. Lignin strengthens secondary cell walls, especially in wood, but the primary wall is built mainly from cellulose. Starch is an energy storage carbohydrate, not a structural component of the cell wall.

The plant cell wall’s main structural component is cellulose, a polymer of glucose units linked by beta-1,4 glycosidic bonds that assemble into strong, fibrous microfibrils. This network gives the wall rigidity and the ability to resist osmotic pressure, helping the plant maintain its shape. Chitin is found in fungi and some animals, not in plants. Lignin strengthens secondary cell walls, especially in wood, but the primary wall is built mainly from cellulose. Starch is an energy storage carbohydrate, not a structural component of the cell wall.

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