1. A mutant bacterium does not produce a functional hydroxamate. This bacterium would have difficulty obtaining_______________.
A) Phosphate
B) Iron
C) Ammonia
D) Thiosulfate
E) Hydrogen sulfide
2. Which of the following should not be included in a medium used to select for a nitrogen-fixing bacterium?
A) KH2PO4
B) (NH4)2SO4
C) Glucose
D) MgSO4
E) Na2HPO4