The Question is from neet-chemistry environmental-chemistry , and it was created by the author THIRUPATHI REDDY

Question

The process of converting atmospheric nitrogen into ammonia by living organisms is called:

THIRUPATHI REDDY · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
 **Primary Concept**: Nitrogen cycle
 **Related Topics**: Biogeochemical cycles, nitrogen fixation, nitrification, denitrification, ammonification
 **Prerequisites**: Basic understanding of the nitrogen cycle and the roles of different microorganisms.
## SOLUTION PATHWAY
**Given Information**:
The question asks about the process of converting atmospheric nitrogen ($N_2$) into ammonia ($NH_3$) by living organisms.
**Method & Steps**:
1. Identify the process:
  Reasoning: The nitrogen cycle involves several key processes.  Atmospheric nitrogen, which is inert, needs to be converted into a usable form for plants and other organisms. This conversion is called nitrogen fixation.
  Formula/Rule:  $N_2 ightarrow NH_3$ (simplified representation)
2. Differentiate between other options:
  Working:  Nitrification is the conversion of ammonia to nitrites ($NO_2^-$) and then to nitrates ($NO_3^-$). Denitrification is the conversion of nitrates back to atmospheric nitrogen. Ammonification is the conversion of organic nitrogen into ammonia.
  Key Point:  Only nitrogen fixation directly converts atmospheric nitrogen into ammonia.
3. Choose the correct answer:
  Result: Nitrogen fixation
  Verification: The definition of nitrogen fixation matches the question's description.
 ## OPTION ANALYSIS
A :x: Nitrification converts ammonia to nitrites and nitrates, not atmospheric nitrogen to ammonia.
B :x: Denitrification converts nitrates back to atmospheric nitrogen, the opposite of the process described.
C :x: Ammonification converts organic nitrogen to ammonia, not atmospheric nitrogen.
D ✓: Nitrogen fixation is the process by which atmospheric nitrogen is converted into ammonia by living organisms, primarily by bacteria.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing nitrogen fixation with nitrification or denitrification: Understanding the direction of the nitrogen conversions is crucial.
   How to avoid:  Use mnemonics or diagrams to remember the sequence of processes in the nitrogen cycle.
  2.Overlooking the role of microorganisms:  Nitrogen fixation is primarily carried out by specific types of bacteria and archaea.
   How to avoid: Learn the names of key nitrogen-fixing organisms (e.g., Rhizobium).
 **Quick Tips**:
  1.Remember the key players:  Bacteria are the main drivers of nitrogen fixation.
  2.Visualize the cycle: A diagram of the nitrogen cycle can help clarify the different processes.

THIRUPATHI REDDY · Answer

Nitrification

THIRUPATHI REDDY · Answer

Denitrification

THIRUPATHI REDDY · Answer

Ammonification

THIRUPATHI REDDY · Answer

The correct Option is "Nitrogen fixation"

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