https://www.khanacademy.org/science/mh-grade-8-science/x0f256b8de9c7cf34:cell-and-cell-organelles/x0f256b8de9c7cf34:cell-organelles/v/structure-of-cell-membrane 2025-10-12T16:00:38.871942301Z Structure of Cell Membrane In this video, we will explore the structure of the plasma membrane and understand how it is the protective boundary of every cell. Using an onion peel experiment, we will discover how the Fluid Mosaic Model explains the cell membrane’s dynamic composition which is made of phospholipids, proteins, cholesterol, and carbohydrates. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Structure of Cell Membrane In this video, we will explore the structure of the plasma membrane and understand how it is the protective boundary of every cell. Using an onion peel experiment, we will discover how the Fluid Mosaic Model explains the cell membrane’s dynamic composition which is made of phospholipids, proteins, cholesterol, and carbohydrates. https://cdn.kastatic.org/ka-youtube-converted/vFMSQ3YtodQ.mp4/vFMSQ3YtodQ.mp4 477 Structure of a Cell https://www.khanacademy.org/science/ncert-grade-9-science/x72362069584dc551:cell-the-building-block-of-life/x72362069584dc551:structure-of/v/functions-of-the-plasma-membrane 2026-05-16T16:10:39.73955917Z Functions of the Cell Membrane Ever wondered how the plasma membrane keeps your cell safe and functioning just like a school’s security system? In this video, we’ll explore the functions of the plasma membrane. We will understand how it controls what enters and exits the cell, how it helps cells communicate, recognise each other, and respond to signals. We will learn about how the plasma membrane is selectively permeable and how different types of proteins helps with various functions. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Functions of the Cell Membrane Ever wondered how the plasma membrane keeps your cell safe and functioning just like a school’s security system? In this video, we’ll explore the functions of the plasma membrane. We will understand how it controls what enters and exits the cell, how it helps cells communicate, recognise each other, and respond to signals. We will learn about how the plasma membrane is selectively permeable and how different types of proteins helps with various functions. https://cdn.kastatic.org/ka-youtube-converted/2dOIgAQ-qaM.mp4/2dOIgAQ-qaM.mp4 563 Structure of a Cell 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 Structure of a Cell https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:cells-and-tissues/xfa1bbeaa3bc88e64:cells/e/cell-wall-and-cell-membrane 2026-05-16T16:10:39.73955917Z Cell Membrane and Cell Wall Let's solve some questions! vibhor exercise