MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Nitrate is reduced and ultimately produces N2 through a series of intermediate gaseous nitrogen oxide products is called ____________ |
| A. | Nitrogen fixation |
| B. | Nitrification |
| C. | Denitrification |
| D. | Nitrogen assimilation |
| Answer» D. Nitrogen assimilation | |
| 2. |
Ammonia or ammonium is oxidized to nitrite followed by the oxidation of nitrite to nitrate is called ____________ |
| A. | Nitrogen fixation |
| B. | Nitrification |
| C. | Denitrification |
| D. | Nitrogen assimilation |
| Answer» C. Denitrification | |
| 3. |
Formation of organic nitrogen compounds like amino acids from inorganic nitrogen compounds is called as ____________ |
| A. | Nitrogen fixation |
| B. | Nitrification |
| C. | Denitrification |
| D. | Nitrogen assimilation |
| Answer» E. | |
| 4. |
Conversion of nitrogen to ammonia or nitrogenous compounds is termed as ____________ |
| A. | Nitrogen fixation |
| B. | Nitrification |
| C. | Denitrification |
| D. | Nitrogen assimilation |
| Answer» B. Nitrification | |
| 5. |
An intermediate of the citric acid cycle that undergoes reductive amination with glutamine as nitrogen donor is ____________ |
| A. | -ketoglutarate |
| B. | Glutamine |
| C. | NADPH |
| D. | H<sup>+</sup> |
| Answer» B. Glutamine | |
| 6. |
The reaction of glutamate and NH4+ to yield glutamine is catalyzed by ____________ |
| A. | Uridylyltransferase |
| B. | Adenylyltransferase |
| C. | Glutamate synthase |
| D. | Glutamine synthase |
| Answer» E. | |
| 7. |
Dinitrogenase is a ____________ |
| A. | Monomer |
| B. | Dimer |
| C. | Trimer |
| D. | Tetramer |
| Answer» E. | |
| 8. |
Dinitrogenase reductase is a ____________ |
| A. | Monomer |
| B. | Dimer |
| C. | Trimer |
| D. | Tetramer |
| Answer» C. Trimer | |
| 9. |
Uridylylation and deuridylylation of PII are brought about by a single enzyme ______________ |
| A. | Uridylyltransferase |
| B. | Adenylyltransferase |
| C. | Glutamate synthase |
| D. | Dinitrogenase |
| Answer» B. Adenylyltransferase | |