Are eubacteria unicellular or multicellular?It is a viscous polymer composed of polypeptides or polysaccharides and functions to protect the bacteria.Pili or pilus are thin projections used for conjugation between bacteria for reproduction after the bacteria are brought together by pili, the DNA moves from one cell to another so new features as antibiotic resistance are transferred between cells Glycocalyx surrounds some eubacterial cells.Flagella consist of three main parts: a portion consisting of flagellin protein called the filament (ie.Structures external to the cell wall may be flagella, fimbriae, axial filaments, glycocalyx, or pill.