1. HEA selects for which type of organism?
a. gram-positive
b. gram-negative
c. acid-fast
d. spore formers
2. On HEA, Shigella will produce _______ color colonies while enteric such as E. coli will produce ______ color colonies
a. salmon/orange, blue-green
b. colorless, red
c. blue-green, salmon/orange
d. red, colorless