1. The labels have been accidentally removed from four (4) transmission electron micrographs of single cells. You know that one micrograph is of the Gram-negative bacterium E. coli, another is the Gram-positive Staphylococcus aureus,

1=E. coli, 2=Mycoplasm, 3=B. cereus, 4=S. aureus

1=B. cereus, 2=S. aureus, 3=E. coli, 4=Mycoplasm

1=B. cereus, 2=S. aureus, 3=Mycoplasm, 4=E. coli

1=B. cereus, 2=Mycoplasm, 3=E. coli, 4=S. aureus

2. Describe the use of a culture medium that (a) contains an agent that inhibits the growth of Gram-negative bacteria and (b) glows lime green in the presence of amino acids. What type of bacteria would be cultivated on this media?