Assimilatory nitrate reduction is carried out by
Show Hint
- Plants
- Fungi
- Bacteria
- All of the above
The Correct Option is D
Solution and Explanation
Assimilatory nitrate reduction is the biochemical pathway converting inorganic nitrate ($\text{NO}_3^-$) into ammonia ($\text{NH}_3$) for incorporation into amino acids and proteins.
Step 2: Detailed Explanation:
Assimilatory nitrate reduction is universally performed by higher plants, photosynthetic algae, fungi, and diverse heterotrophic/autotrophic bacteria.
The pathway uses two sequential enzymes:
1. Nitrate reductase ($\text{NO}_3^- + 2e^- \to \text{NO}_2^-$)
2. Nitrite reductase ($\text{NO}_2^- + 6e^- \to \text{NH}_4^+$).
Step 3: Final Answer:
Hence, assimilatory nitrate reduction is carried out by all of the above.
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