1. ATP in nitrogen fixation:

a) Is provided by the host plant
b) Directly drives the oxidation of Ferredoxin and reduction of Dinitrogenase reductase
c) Is required because reduction of Dinitrogenase reductase by Ferredoxin is energetically unfavorable
d) Both a and c
e) All of the above

2. Which statement about a diet rich in amino acids is true?

a) It will give less energy than glucose because amino acids are often broken down to TCA cycle intermediates
b) The Urea Cycle will be required for removal of excess nitrogen released from amino acid breakdown
c) Requires energy in the form of ATP for removal of excess nitrogen in the Urea Cycle
d) All of the above
e) None of the above