Raystown Lake. The largest man-made lake built by the Army Corps of Engineers in Pennsylvania is Raystown Lake. It is also the second largest man-made lake in the state, at 8,000 acres. In Huntingdon County, Pennsylvania Raystown Lake is part of a 29,000-acre project that serves as a home for recreation in the area. The area is popular for fishing, hunting, hiking, swimming and boating.
Protein characteristic of the postsynaptic membrane. In a chemical synapse, the postsynaptic membrane is the membrane that receives a signal (binds neurotransmitter) from the presynaptic cell and responds via depolarisation or hyperpolarisation. The postsynaptic membrane is separated from the presynaptic membrane by the synaptic cleft.
A cell membrane is composed of two layers of phospholipids. Each phospholipid molecule has a hydrophilic phosphate head and two hydrophobic lipid tails. The heads line up along the inner and outer surfaces of the cell membrane, while the tails fill the middle space.