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Plasma membrane and cytoplasm (article) | Khan Academy Plasma membrane (cell membrane) is made of two phospholipid layers, or a type of lipid with hydrophilic heads on the outside and hydrophobic tails inside It is also known as a phospholipid bilayer There are also protein channels which allow certain molecules to go in and out of the cell and sugar embedded in the membrane
Fluid mosaic model: cell membranes article - Khan Academy The purpose of the cell membrane is to hold the different components of the cell together and to protect it from the environment outside the cell The cell membrane also regulates what enters and exits the cell so that it doesn’t lose too many nutrients, or take in too many ions
Cell membrane overview and fluid mosaic model (video) | Khan Academy Learn about the cell membrane's vital role in regulating what enters and leaves a cell, and in helping a cell successfully maintain homeostasis, even when the environment around it is changing Explore the cell membrane's the three main components: phospholipids, cholesterol, and proteins
Khan Academy The endomembrane system in eukaryotic cells includes cell membrane, nuclear envelope, endoplasmic reticulum, Golgi apparatus, vesicles, vacuoles, and lysosomes These parts, made of phospholipid bilayers, work together for protein and lipid synthesis, modification, transport, and recycling within the cell
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