Biology · CELL THE UNIT OF LIFE

Refer to the diagrammatic representation of the Fluid mosaic model of plasma membrane (Figure 8.4): Where are the hydrophobic tails of saturated hydrocarbons located in relation to the aqueous exterior?

1. A
   Protruding openly towards the extracellular fluid surface
2. B
   Directed towards the interior part of the bilayer, protected from the aqueous environment
3. C
   Bound covalently to external peripheral oligosaccharide chains
4. D
   Exposed directly to cytoplasmic water molecules on both inner and outer leaflets