Chapter 2

Describe the major structural differences between membranes of Bacteria and Archaea. (Section 2.7)

List several functions of the outer membrane in gram-negative Bacteria. What is the chemical composition of the outer membrane? (Section 2.11)

What cell wall polysaccharide common in Bacteria is absent from Archaea? What is unusual about S-layers compared to other cell walls of prokaryotes? What types of cell walls are found in Archaea? (Section 2.12)

In a few sentences, explain how a motile bacterium is able to sense the direction of an attractant and move toward it. (Section 2.19)