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Transcripción del video
what I want to do with this video was given overview above the endo membrane system in you carry out excels endo Ando membrane system at a very high level the end a membrane system is all love the the membranes that interact with each other inside of a cell so what membranes are we talking about well he did start off by talking about the cell membrane itself and all these membranes these have by layers a phospholipid I sometimes my brain malfunctions in a column by lipid layers but these are by layers of possible lipid so if I were to zoom in right over here if I were to zoom in right over there that line it really is a by layer a by layer a phospholipid so it would look like this so you have your hydro hydrophilic heads pointing outwards and your hydro phobic tales pointing inwards so hydrophilic adds pointing outwards hydrophobic tails pointing inwards and it keeps going so you have the if you think a bit from left to right you have a layer of two or you have a by layer has did say a fossil a bit that's going to be true the cellular membrane that's going to be true love this up the outer nuclear membrane right over here we drew this one on the video on the endoplasmic reticulum and over here you see these two membranes you might say okay is this a by layer know this is actually to buy layers so this membrane right over here is has a phospholipid by layer and this membrane over here also has a facebook lipid by a possible lipid by layer this the one but it is another color this one that I'm starting to starting to trace in magenta that's the outer membrane over the nuclear envelope and its continuous is continuous with the membrane above the and OPA's make reticulum which I'm starting to highlight right over here and then the one that I'm highlighting in this purple color in this purple car this is the inner membrane love the nuclear envelope in all of this is part of the endo membrane system so Rd just a party start talking about the endoplasmic reticulum and we going to someday up on that on the video on the endoplasmic reticulum her to kill 'em and the Golgi apparatus but it's also part of the end a membrane system and in the endoplasmic reticulum in particular can represent up to are even more than 50 percent above the membrane Associated the possible lipid membrane associated with the cell and we've talked about what goes on in the Lumina the endoplasmic reticulum so this area right over here right over here we've talked about what happens there proteins can get synthesized actually other molecules like lipids can get synthesize there they can and then they can go to the smoothie ER and then the place where they can exit from the smooth ER and we saw that in the body on the endoplasmic reticulum how they can kinda butt out we call this area is often called the transitional ER so this area right over here we would call the transitional and a plasma critical 'em transitional transition Chantal transition all transitional ER is this place where these proteins are being but it off and their budding of in vesicles so this is the transitional ER and all vesicles are our little small compartments that have a membrane around it that things like a protein can be transported in and not you know I want to beat a dead horse here but all these lines that I'm dry united as a single line these are phospholipid by layers so the memory might be different the phospholipid by layers may be different when we go from one piece on the membrane to another but they all had that same general notion of having this this by layer of us a lipid but this is review these proteins they can they can they can emerge from the transitional ER they can make their way to the Golgi apparatus and we've already talked about how the Golgi apparatus these these proteins can be matured when I say be matured there's a bunch enzymes in here there's a buncha goal Genzyme's in here they can do all sorts of things to the proteins tag them they can actually they can actually add ed add saccharides to them so that they they become glycoproteins they can tag them so they can be used in the cellular membrane or be used outside cellular membrane are to be used other places in the cell so for example this protein right over here but it offers a as a as a vesicle it makes its way to the Golgi apparatus the membrane can then murdered and dumped the protein into the Golgi apparatus from there can be matured it made my turn to a glycoprotein who knows what happens to it and then it could but off again and then this protein this now but it off it could ago to be embedded into the cellular membrane the protein could be excreted from the cell or could go to other parts of the cell now the learned everything I just talked about those are the only parts of the end a membrane system you have things like vacuoles which are membrane-bound organelles in a cell in plant cells a vacuum all can be used for storage it could be used for structure vacuoles can get quite large in the cash to give the kind of the structure above the actual plant in animal cells in animal cells you might have something called a lice is on analyzes over the membrane brown structure where the sense that things go to for the most part B be recycled or to be to be torn apart so you know maybe something that package from someplace this is some molecules or let me do this another color you have some and I do that vesicle little bit too big but maybe the stuff that needs to be destroyed so this membrane is going to it can then merged with that membrane and dump its contents and then dump its content in here and this has a very low this is a low pH in a can actually kinda to break apart the stuff in it can I just the stuff and recycle in into its kinda big sixty more constituent material so all of this is part up the endo membrane system so once again because in appreciation for how complex and and a lot of those beautiful cells can be