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Which one converts nitrite to nitrate?...

Which one converts nitrite to nitrate?

A

Nitrosomonas

B

Nitrobacter

C

Azotobacter

D

Rhizobium.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question "Which one converts nitrite to nitrate?", we can follow these steps: ### Step 1: Understand the Nitrogen Cycle The nitrogen cycle involves various processes where nitrogen is converted into different chemical forms. Key processes include nitrogen fixation, nitrification, and denitrification. ### Step 2: Identify the Bacteria Involved We have four options: 1. **Nitrosomonas** 2. **Nitrobacter** 3. **Azotobacter** 4. **Rhizobium** ### Step 3: Analyze Each Option - **Nitrosomonas**: This bacterium converts ammonia (NH3) into nitrite (NO2-). - **Nitrobacter**: This bacterium converts nitrite (NO2-) into nitrate (NO3-). - **Azotobacter**: This bacterium converts atmospheric nitrogen (N2) into ammonia (NH3). - **Rhizobium**: This bacterium also converts atmospheric nitrogen (N2) into ammonia (NH3) but does so in symbiotic association with leguminous plants. ### Step 4: Determine the Correct Answer From the analysis, we see that **Nitrobacter** is the bacterium that specifically converts nitrite to nitrate. ### Conclusion The correct answer to the question is **Nitrobacter**. ---
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