AP BIOLOGY

Detailed explanation-1: -The plant cell wall is generally arranged in 3 layers and composed of carbohydrates, like pectin, cellulose, hemicellulose and other smaller amounts of minerals, which form a network along with structural proteins to form the cell wall.

Detailed explanation-2: -The cellulose molecules provide tensile strength to the primary cell wall.

Detailed explanation-3: -Plant cells have a cell wall. The cell wall provides strength and support to the plant, much like the exoskeleton of an insect or spider. Our skeletons are inside our bodies, rather than on the outside like insects or spiders. The plant cell wall is mainly made up of the carbohydrates molecules cellulose and lignin.

Detailed explanation-4: -New research modeling the plant cell wall reveals that chains of cellulose bundle together within the cell wall and slide against each other when the cell is stretched, providing a unique combination of strength and extensibility.