Question
1 point The process by which bacteria convert ritrate into nitrogen gan (x_(2)) is called. Nitrification Nitrogen fuxing Assimilation Denitrification
Answer
4.3
(328 Votes)
Alexander
Veteran · Tutor for 9 years
Answer
'Denitrification'
Explanation
## Step1The problem involves the process of converting nitrate into nitrogen gas (N₂). This process is a part of the nitrogen cycle, an essential biogeochemical cycle where nitrogen is converted into multiple chemical forms as it circulates among the atmosphere, terrestrial, and marine ecosystems. The options provided are:1. **Nitrification**: This process involves the conversion of ammonia into nitrite (NO₂⁻) and then into nitrate (NO₃⁻). It is performed by nitrifying bacteria. However, this does not involve the direct conversion of nitrate into nitrogen gas.2. **Nitrogen Fixation**: This is the process of converting atmospheric nitrogen (N₂) into ammonia (NH₃). This process is carried out by certain bacteria and is crucial for incorporating atmospheric nitrogen into biological systems. It does not involve the conversion of nitrate to nitrogen gas.3. **Assimilation**: In this process, plants and other organisms assimilate nitrate and ammonia, incorporating them into biomolecules such as amino acids. This process does not involve the release of nitrogen gas.4. **Denitrification**: This is the process by which bacteria convert nitrate (NO₃⁻) into nitrogen gas (N₂). This process closes the nitrogen cycle by returning nitrogen to the atmosphere. ## Step2Given these explanations, the correct term that describes the conversion of nitrate into nitrogen gas by bacteria is "Denitrification".