cell membran (structure of the cell membran) by muhammad aswan

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CELL MEMBRAN (STRUCTURE OF THE CELL MEMBRAN) BY MUHAMMAD ASWAN

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CELL MEMBRAN (THE STRUCTURE OF MEMBRAN)

CELL MEMBRAN (STRUCTURE OF THE CELL MEMBRAN)BY MUHAMMAD ASWAN Definition of The Cell Membran Cell Membran is the layer to separate that a cell with the other cell as well to separate into cell the organell

The General of Component Cell Membrane

Components of The Cell Membran The major constituens of tha cell membran are lipid and proteinMembran Protein and Lipid are arranged in particullary fashion, both contribution to containt the cell and to selectively allowing or blocking the traffic of certain substance of through the cellSuch arrangement of molecules provides fluidty to cell membrane

Components of The cell Membran : Lipid

Phospholipid are amphiphatic molecules (with hydrophobic tail and hydrophilic head) One of phospholipid tails exits mostly in a trans configuration providing more fluidity to the membraneCholesterol is a rigid molecule that makes membrane less fluid. How Are Phospholipid Organized in the Cell Membran ?

Phospholipid constitute two mirror image oriented layer the lipid bilayerThe hyrdrophilid heads are exposed to the high content water region, while the hydrophobic tails constitute a barrier imprenetable to almost all substanceComponents of the Cell Membrane : Membrane Protein

Membrane Protein are embedded in the fluid matrix of lipid bilayer.More than 50 types protein have been found in the plasma. Membrane protein determine most of the membrane specific function.Transport membrane, enzymes and receptor protein (membrane protein that interact with the other cell or molecules) include the vast majority of membrane protein. Fluid Mosaic Model

Fluid because individual phospholipid and proteins can move side to side within the layer, like its a liquid Mosaic- because of the pattern produced by the scattered protein molecules when the membrane is viewed from above.Semipermeable Membrane

Small molecules and larger hydrophobic molecules move through easily. e.g. O2, CO2, H2OSemipermeable Membrane

Ions, hydrophilic molecules larger than water, and large molecules such as proteins do not move through the membrane on their own.Function of Cell MembraneProvide a binding site for enzymesInterlocking surfaces bind cell together (junction)Contain the cytoplasm (fluid in cell)Protective barrierRegulate transport in & out of cell (selectively permeable)Allow cell recognitionProvide anchoring site for filament of Cytoskeleyon

11 SEKIAN DAN TERIMA KASIH