https://www.khanacademy.org/science/ap-biology/cell-structure-and-function/membrane-permeability/v/plant-cell-walls 2022-11-16T04:22:43.7414897Z Plant cell walls The cell wall surrounds the plant cell, providing both structure and protection. Plant cell walls are made up mostly of cellulose, and also include hemicellulose and pectin. Plant cells connect directly to one another via tunnels in their cell walls called plasmodesmata. video https://cdn.kastatic.org/googleusercontent/f1qMxaZZgQlEIw_d6Y37Y2BWCKKcj5_x5ck6SHI1VgGVR8OkAd76PhcPj3EMDrUKh_gWIdaTOh9Ro8-mGCYsVdHC Plant cell walls The cell wall surrounds the plant cell, providing both structure and protection. Plant cell walls are made up mostly of cellulose, and also include hemicellulose and pectin. Plant cells connect directly to one another via tunnels in their cell walls called plasmodesmata. https://cdn.kastatic.org/ka-youtube-converted/zdvKhaQxvag.mp4/zdvKhaQxvag.mp4 463 Cell wall https://www.khanacademy.org/science/ap-biology/cell-structure-and-function/membrane-permeability/a/the-extracellular-matrix-and-cell-wall 2021-04-29T07:58:23Z The extracellular matrix and cell wall The extracellular matrix and cell wall. Collagen, integrins, fibronectin, cellulose, and pectin. article