MCQOPTIONS
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| 1. |
Nitrogen fixation by the microorganisms can be detected by adopting the approach of |
| A. | demonstrating growth in a nitrogen free medium |
| B. | cultivating the microorganisms in the presence of nitrogen labeled with isotropic nitrogen |
| C. | measuring15N2 by mass spectrometer |
| D. | all of the above |
| Answer» E. | |