Fluid mosaic model download6/30/2023 ![]() Phosphate group phosphoester bond glycerol ester bond fatty acid Membranes are mainly made of phospholipids hydrophilic head hydrophobic tail Non-polar molecules can diffuse directly through the phospholipid bilayerClick here to hide answers Click to reveal answer.Polar molecules require proteins to enable them to pass through the membrane.Question 4: How can polar and non-polar molecules pass through the membrane (2). It is highly folded to allow more surface area for reactions to take place utilising these proteins and enzymes.įat-soluble organic molecules can diffuse through the bilayer but polar molecules require proteins Fat-soluble molecules Polar molecules Extracellular space Cytosoplasm (aqueous) hydrophilic pore Organelle membranes The mitochondrial membrane contains proteins and enzymes essential for respiration. Membranes allow cellular compartments to have different conditions pH 4.8 Contains digestive enzymes, optimum pH 4.5 - 4.8 lysosome Membrane acts as a barrier pH 7.2 cytosol Cover credit: Micrograph by Volker Brinkmann, PLoS Pathogens Vol. Membranes are flexible and able to break and fuse easily Neutrophil engulfing anthrax bacteria. isolating organelles from the rest of the cytoplasm, allowing cellular processes to occur separately.allowing selected molecules to move in and out of the cell.keeping all cellular components inside the cell.They have a number offunctions, such as: What are membranes? Membranes cover the surface of every cell, and also surround most organelles within cells. ![]() ![]() Memory Game – try and draw this in as much detail as possibleĬells have many membranes: plasma membrane tonoplast outer mitochondrial membrane inner mitochondrial membrane outer chloroplast membrane nuclear envelope Describe the structure and function of the cell membrane.The Fluid Mosaic model Learning Objectives Success Criteria Describe, with the aid of diagrams, the fluid mosaic model of a membrane structure - Describe the roles of the components of the membrane. ![]()
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