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.
EXCLUSIVE: âIâm lucky I made itâ: Eritrean woman in iconic picture of dramatic migrant shipwreck tells of her terrifying ordeal. Wegasi Nebiat was saved after the wooden boat carrying her crashed off the popular Greek island of Rhodes. The 24-year-old Eritrean is now on her way to Athens after being miraculously saved from a sinking ship by Greek islanders. Scroll down for video. Wegasi Nebiat was rescued from a shipwreck when the smuggler boat she was travelling in crashed in rocks off the Greek islands of Rhodes.