A constituent of these biological structures called DSPC is used in the formulation of several mRNA vaccines. These structures’ flippases and scramblases (10[1])facilitate transverse (10[1])movement between their leaflets. An early sign of apoptosis is the formation of blebs in these structures. (10[1])The rigidity of these structures at varying temperatures is controlled by their cholesterol content. (10[4])Proteins in these structures may be classified as “peripheral” or “integral.” The fluid mosaic model of these structures (10[1])describes how channel proteins are embedded in their phospholipid bilayers. For 10 points, name these structures that separate the interior and exterior of cells. ■END■