This chapter will examine the diversity, structure, and function of prokaryotes. Prokaryotes have an important role in changing, shaping, and sustaining the entire biosphere. They can produce proteins...This chapter will examine the diversity, structure, and function of prokaryotes. Prokaryotes have an important role in changing, shaping, and sustaining the entire biosphere. They can produce proteins and other substances used by molecular biologists in basic research and in medicine and industry