Sorry for the low sound quality of this video. You will need to turn up the volume and use the closed captioning. Note the color of the phospholipids in this model often referred to as the Fluid Mosaic Model which refers to the structure of the plasma membrane. The "mosaic" refers to the various components such as the phospholipids, proteins etc that are embedded within the membrane. The membrane is not rigid but has a fluid consistency. The phospholipids are represented in the model by the white, round shaped objects and the red shaped objects. The white structures represent the polar phosphate head. It is hydrophilic (water loving) and is attracted to water. The red structures represent the nonpolar fatty acid tails of the phospholipid. The fatty acid tails are hydrophobic (water fearing or water hating) and they repel water. The blue structure represents an integral or transmembrane protein. Membrane proteins have various functions such as membrane channels for different substances and receptors.
