okay this is objective two part D bulk transport so we talked about with objective two parts a b and c dealing with uh um passive transport uh osmosis facilitated diffusion simple diffusion so we're going to take a look at bulk transport which is actually going to require some ATP um and the first one we're going to take a look at is what is vascular transport so this is when you're trying to transfer large particles across the membrane so they can't just go through a protein they're even too big just to go through a protein uh so you're going to have to be um delivered by way of a vesicle so you can see what we've got here inside we've got these large macro molecules which are represented in green inside of this vesicle that vesicle is going to fuse with the membrane and release the contents to the extracellular fluid that's going to be outside the cell so V transport is when you're moving materials within vesicles because it's so large and they can't move through the cell membrane and you can do this by bringing this is the example of bringing something or taking something out of the cell but you can actually move material into the cell using this um bulk transport so there's two different ways again this is an active transport mechanism meaning it requires ATP and there's two main types of vesicular trans transport we're looking at endocytosis and exocytosis if you look at just the root word Endo versus the root word EXO Endo means into EXO means out cyto is referring to the cell so it's the process of moving things into the cell or the process of moving things out of the cell now with endocytosis there's actually two subcategories we can move different things into the cell we can either move large solids into the cell which is called phagocytosis or we can move fluid into the cell which is called penos cytosis phagocytosis is sometimes referred to as cell eating because you are bringing bulk particles in where pinocytosis is sometimes referred to as cell drinking because you're bringing fluid into the cell so there's a video here that you all are welcome to take a look at um on your own it's hyperlink in the PowerPoint so you're welcome to look at that it's only about 45 seconds so it's not a terribly long video this just shows picture-wise what's going on between the two different types of endocytosis remember this is bringing something into the cell so again you can bring fluids into the cell which is termed pinocytosis now these things right here these are solutes so those are solute particles sorry my pen wasn't writing there we go those are solute particles not solat solutes um uh those diamonds and stars and stuff like that that's just solute so we're talking about like sodium ions potassium ions things like that um just very sugars things things that are just in dissolved in the fluid in that extracellular fluid when the cell brings in the extracellular fluid it includes those dissolved solutes okay now phagocytosis is when you're bringing in large particles um and this could be something like a white blood cell bringing in a bacteria cell which is pathogenic to be destroyed okay so that would be an example of Phagocytosis some large large particle that could be brought in okay so again vesicular transport we have exocytosis here we've got the vesicle filled with macro molecules proteins for example that were made by the ribosome instead of a single protein it could be a bunch of proteins um and then that will then leave the cell through a vesicle right so the vesicle is going to take it from the goia apparatus to the cell membrane where it will then be deposited outside of the cell and that's it for objective two part D