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 structure of cell membrane allows nonpolar molecules to  diffuse, but not polar molecules. Membrane architecture is in the  form of a phospholipid bilayer. A single phos â¦ pholipid has a head  composed of a polar NH3 group, and two tails composed of nonpolar  fatty acids.However, very small, polar molecules like water can also cross the  phospholipid bilayer due to hydrostatic pressure and concentration  gradient differences. Water will, but with some difficulty because  of it's polarity.