Question

1) A microbial siderophore is

A) an effector chemical that stimulates the production of iron in the environment.

B) a small molecular weight organic molecule synthesized by a microbe to bind iron in the environment.

C) a membrane protein synthesized by a microbe that transports iron from the environment.

D) any iron binding molecule synthesized by a microbe that yields a green solution when dissolved in water.



2) Fur, a protein involved in siderophore synthesis and the membrane transport of Fe-siderophore complexes, is not

A) a regulatory protein.

B) a repressor protein.

C) an activator protein.

D) a constitutively synthesized protein.