Acetylcholine receptors<span> are embedded in the </span>sarcolemma<span> at neuromuscular junctions. A neuromuscular junction is where a motor neuron makes contact with a muscle fiber. The </span>sarcolemma<span> is the cell membrane of a muscle cell.</span>
The lipid components of cellular membranes often include phospholipids and cholesterol. Phospholipids is made up of glycerol, fatty acids, phosphate and organic derivatives such phospho inositol and choline. Cholesterol is the component of the membrane lipid which determine the fluidity of the memebrane; it also participates in membrane singalling system.
1- Bioremedation (When you add a species to an ecosystem its not native to.
2- The competition for resources increased in the ecosystem.