BIOL 3060 Lecture Notes - Lecture 2: Mitochondrion, Membrane Structure, Hydrophile
26 Sep 2016
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Document Summary
For physiologists, getting into the inside the cells requires getting though membranes, where the tranismission of molecules in cell bio has to do with properties of cell membranes. The cell has to exchange some basic things like take up o2 (respiration) via membrane, nutrients (glucose) , and expel waste . By confining the inside of the mitochondrion, and it increases efficiency in respiration and also increase efficiency in regulation. b. i. Physical support: hold enzymes in certain ways that allow for their active sites to be exposed. Phospholipid: there are no chemical bonds holding the individual units together, just held together by hydrophobicity and hydrophilicity. It is fluid, a bimolecular leaflet: the lipid is hydrophobic (away from water, the phosphate is hydrophilic (water loving) Protein molecules embedded in the membrane (p80 text) 2 types of proteins in cell membranes: extrensic/pheripheral stuck into the membrane, but not all the way through the membrane, intrinsic/ integral: go whole way through the bimolecular leaflet.
