Explore topic-wise MCQs in Biochemistry.

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