Among the top CEOs, the highest paid woman was Marissa Mayer of Yahoo at $42.1 million sitting at 14th on the list. Median pay for the 200 CEOs was $17.6 million, a growth of 1.9% over last yearâs study.
In bacteria, peptidoglycan forms the cell wall. Archaean cell walls have various compositions, and may be formed of glycoprotein S-layers, pseudopeptidoglycan, or polysaccharides. Fungi possess cell walls made of the glucosamine polymer chitin, and algae typically possess walls made of glycoproteins and polysaccharides.
Cell wall: The cell wall is a rigid layer that surrounds the plant cells. Plant cell walls are primarily made up of cellulose. It is located outside the cell membrane whose main function is to provide rigidity, strength, protection against mechanical stress and infection.