MICR 4054 Exam 4 Questions and
Answers
Before nitrate can be assimilated, it must ultimately be converted to - Answer-Ammonia
During assimilatory sulfate reduction the sulfate is first incorporated into - Answer-Cysteine
What is the effect of denitrification on a local ecosystem? - Answer-Nitrogen is lost
How is a proton motive force generated during dissimilatory sulfate reduction? - Answer-H2 gas is
generated from lactate oxidation and then split in the periplasm. The electrons flow back into the cell
and are accepted by sulfite while the protons remain in the periplasm.
The symbiosis between rhizobia and legumes takes place in specialized plant organs called - Answer-
Root nodules
The component of nitrogenase that is a homodimer, that has an F4S4 cluster, and that has two sites for
hydrolyzing ATP is called the - Answer-Iron protein
How many ATP must be consumed for a molybdenum-containing nitrogenase to convert one molecule
of N2 to two molecules of NH3? - Answer-16 ATP
Answers
Before nitrate can be assimilated, it must ultimately be converted to - Answer-Ammonia
During assimilatory sulfate reduction the sulfate is first incorporated into - Answer-Cysteine
What is the effect of denitrification on a local ecosystem? - Answer-Nitrogen is lost
How is a proton motive force generated during dissimilatory sulfate reduction? - Answer-H2 gas is
generated from lactate oxidation and then split in the periplasm. The electrons flow back into the cell
and are accepted by sulfite while the protons remain in the periplasm.
The symbiosis between rhizobia and legumes takes place in specialized plant organs called - Answer-
Root nodules
The component of nitrogenase that is a homodimer, that has an F4S4 cluster, and that has two sites for
hydrolyzing ATP is called the - Answer-Iron protein
How many ATP must be consumed for a molybdenum-containing nitrogenase to convert one molecule
of N2 to two molecules of NH3? - Answer-16 ATP
