BIO310H5 Lecture : Lecture #2.docx
Document Summary
Bio310 lecture notes #2 allows us to see much more detail and to see structures. Phospholipids are polar, fatty acid chains are non-polar. Peripheral proteins: don"t pass the membrane at all but interact with many other proteins. Integral proteins: are proteins that are necessary for the functioning of the cell membrane. Lipid rafts: parts of the membrane where there isn"t fluidity, more rigid. will find more cholesterol there. Glycoproteins: gives information to neighboring cells, for instance to say that they do belong there in the body. also can be sued to anchor to other cells. Hgiher temp (increases movement and collisions) = more diffusion. Mass of the molecule, the heavier = less diffusion. Surface area (the surface area of how much area is avialable for diffusion), the bigger the surface area = mor diffusion. Medium: air diffusion>> water diffusion small uncharged, thus easy to pass semi-permeable. Channels are selective for specific for certain ions.
