Stephen Hawking dismisses belief in God in an exclusive interview with the Guardian. Photograph: Solar & Heliospheric Observatory/Discovery Channel T he belief that heaven or an afterlife awaits us is a fairy story for people afraid of death, Stephen Hawking has said. In a dismissal that underlines his firm rejection of religious comforts, Britain's most eminent scientist said there was nothing beyond the moment when the brain flickers for the final time.
How are the tails and heads of membrane phospholipids oriented in their environment? a. The hydrophobic heads are oriented towards each other and the hydrophillic tails are oriented towards the extracellular fluid and the intracellular fluid.
The lipid bilayers that are found in cell membranes have two important characteristics. One of them is that most polar molecules cannot go across the membrane. Polar molecules are attracted to the water inside the cell or to the water outside the cell.However, they cannot interact with the nonpolar tails of the phospholipids within the lipid bilayer. The result is that the interior part of the cell membrane forms a non polar zone that acts as a barrier to polar molecules.hospholipids are molecules that make up the framework of the cell membrane..Phospholipids are lipids in which the long chains or tails are joined to a short polar head that contains phosphorus. The long tails are nonpolar, so water molecules will tend to push them away.