This is some of the questions and answer which all answers are correct, i just took this quiz 1, group of genes coding for relate proteins in bacteria are arranged? a. operons 2. are the major group of photosynthetic bacteria a. cyanobacteria 3. positive bacteria have a think cell wall composed of a. petidoglycan 4. bacteria are divided into two group based on how absorb stain a. cell walls 5. require high salt concentrations? a. halophiles 6. most archaen lack a peptidoglycan a. cell wall 7. the most ancient bacteria fossils were found in a. marine rocks