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Membrane Structure & Function - Coggle Diagram
Membrane Structure & Function
Characteristics that pass through a cell membrane
Small, Non polar, and uncharged molecules
Smaller molecules, creates faster movement
phospholipids: amphipathic, heads are phosphate and polar, tails are fatty acids ( non-polar), phospholipid bilayer (membrane)
Proteins
Peripheral Proteins: are bound to the end of the membrane
Integral Proteins: penetrate the hydrophobic core (go through the tails of phospholipids)
Transmembrane Proteins: span the membrane, in between the bilayer
Fluid Mosaic Model: membrane structure depicts the membrane as a mosaic of protein molecules bobbing in a fluid bilayer of phospholipids
Carbohydrates
Carbohydrates- used for identification purposes (can recognize food like meat, etc.)
Glycolipids- are carbohydrates bonded to lipids
Glycoproteins- are carbohydrates bonded to proteins
Cell membrane- selective permeable (picky), some substances cross more easily than others
Transport Proteins
Transport Proteins: hydrophilic tunnels/structures that allow for movement
Channel Proteins- hydrophilic tunnels that move items across a membrane (Ex. Aquaporins)
Carrier Proteins: Bind to molecules + carry them across a membrane (activated by a certain protein to allow it to move)
Passive Transport: form of transport that doesn't require ATP (Ex. little energy to transport)