Gram positive cells stain ________________. 

There is great diversity in the number of antibodies that people can make. How does the genome encode so many? What “tricks” does the immune system use? What mechanisms contribute to this great diversity? 

Halophiles are able to grow in __________________. 

Which process produces the most NADH?  

What is a nosocomial infection? 

Which statement is true?   

Which group is referred to in the following descriptions?   

You try growing an uncharacterized strain of E. coli. You find it grows well on rich (non-synthetic) media but will not grow on minimal (synthetic) media. However, it will grow on minimal media plus histidine. What do you conclude?   

What groups have 70s ribosomes?    

 Define endosymbiosis. Present one piece of evidence (Why do we believe this is true?) that endosymbiosis was important in evolution.