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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 | |