Question

Diversity of Bacteria

1. Proteobacteria constitute the majority of known bacteria of medical, industrial,

    and agricultural significance, and as a group what is their gram stain reaction?

2. Which species of Epsilonproteobacteria is responsible for causing peptic

     ulcers in humans?                                                                                        

3. The cytoplasmic membranes of mycoplasmas are unusual in that they contain

     what, which gives them the ability to resist osmotic lysis?   

4. What group of gram-positive bacteria are found in Swiss cheese?   

5. What species of gram-positive bacteria with filamentous morphology

     can synthesize antimicrobial metabolites?                                                    

Diversity of Archaea

6. Archaea found in hypersaline environments are know as what?   

7. The archael species Halobacterium salinarum can catalyze light-driven

     ATP synthesis using what protein which has a structural and functional

     similarity to rhodopsin, the visual pigment of the eye?   

8. What type of condition/environment is required methanogens to grow?

  

9. What is the highest temperature can one strain of Methanopyrus tolerate

     and grow?   

10. What enzyme is only found in hyperthermophiles which is responsible

       for DNA stability at high temperatures?   

           

Answer 1