The cell wall surrounds the cell membrane in plant cells, bacteria, and some fungi. In plant cells, the cell wall is composed of cellulose. In bacteria, the wall is made mostly of polypeptides (protein) or polysaccharides (carbohydrates). The cell wall provides support and protection and is responsible for giving plant cells their shape. Another important structure found only in eukaryotic cells is the nucleus . This struc-ture contains the genetic information and is the control center of the cell. Protecting the nucleus is a double-membrane called the nuclear envelope , which, like the plasma membrane, is semi-permeable.
Welcome to the Bisha Mining Share Company. Bisha Mining is an Eritrean company formed for the development and operation of the Bisha Mine in western Eritrea. It is owned by Nevsun Resources Ltd. (60%) and the Eritrean National Mining Corporation (ENAMCO) (40%). The Bisha Mine is a high-grade copper, gold, silver and zinc mine that commenced production in February 2011.
Nakfa is the remotest village of Eritrea but at the same time the most sought after place for any casual tourist from Italy or China.This was the place where the Eritrean Peoples Liberation Front or the E.P.L.F. fought bravely for nearly 30 years before liberation of Eritrea from the rule of the Ethiopian government.or this reason the currency of Eritrea is also named âNakfaâ. The road from Afabet to Nakfa is winding like all the other roads in this country. But in this sector it is so narrow and the village van is so bulging that you end up paying offering to all the temples back home in India.