In a Root Nodule, the Gene Coding for Nitrogenase

question 18

Multiple Choice

In a root nodule, the gene coding for nitrogenase

• A) is inactivated by leghemoglobin.
• B) is absent in active bacteroids.
• C) is found in the cells of the pericycle.
• D) protects the nodule from nitrogen.
• E) is part of the Rhizobium genome.

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Definitions:

Protein Degradation

The process of breaking down proteins into their constituent amino acids or peptides, usually by cellular enzymes.

Chemical Modification

The alteration of a chemical compound's structure through chemical reactions, often to change its properties or activity.

TATA Box

A DNA sequence found in the promoter region of genes, usually about 25 base pairs upstream from the transcriptional start site, and is crucial for the initiation of transcription in some genes.

Proteolytic Processing

The cleavage of proteins by enzymes called proteases, which can activate, deactivate, or modify the function of the protein.