The Question is from neet-botany mineral-nutrition n2-metab0lism, and it was created by the author B VENKAT

Question

Thiobacillus is a group of bacteria helpful in carrying out

B VENKAT · Accepted Answer

## CORE INFORMATION
✓ **Answer**: D
## CONCEPT FRAMEWORK
**Primary Concept**: Bacterial metabolic processes
**Related Topics**: Nitrogen cycle, Chemotrophy, Denitrification
**Prerequisites**: Basic knowledge of bacterial metabolism and the nitrogen cycle.
## SOLUTION PATHWAY
**Given Information**:
    Thiobacillus bacteria and its role in the nitrogen cycle.
    Options related to different nitrogen-related processes.
**Method & Steps**:
    1. Recall the role of Thiobacillus in the nitrogen cycle.
        Reasoning: Thiobacillus is known for its role in oxidizing sulfur compounds and its involvement in denitrification.
        Formula/Rule: None applicable.
    2. Identify which option aligns with the known function of Thiobacillus.
        Working: Comparing the options with the known role, denitrification is the correct match.
        Key Point: Denitrification is the conversion of nitrates to nitrogen gas.
    3. Select the correct option.
        Result: Denitrification is the correct answer.
        Verification: This aligns with the established role of Thiobacillus.
 ## OPTION ANALYSIS
[A] :x: Nitrogen fixation is the conversion of atmospheric nitrogen to ammonia, not the role of Thiobacillus.
[B] :x: Chemoautotrophic fixation is a broader term, while Thiobacillus is more specifically involved in denitrification.
[C] :x: Nitrification is the conversion of ammonia to nitrite and nitrate, not the role of Thiobacillus.
[D] ✓: Denitrification is the process where nitrates are reduced to nitrogen gas, which is a key function of Thiobacillus.
 ## LEARNING AIDS
**Common Mistakes**:
    1. Confusing nitrification and denitrification: Remember that nitrification is oxidation, while denitrification is reduction.
    2. Misidentifying Thiobacillus' role: Thiobacillus is key in the denitrification step of the nitrogen cycle.
**Quick Tips**:
    1. Associate 'thio' with sulfur and relate it to the redox reactions involved in denitrification.
    2. Use mnemonics to remember the steps of the nitrogen cycle and the bacteria involved.

B VENKAT · Answer

Nitrogen fixation

B VENKAT · Answer

Chemoautotrophic fixation

B VENKAT · Answer

Nitrification

B VENKAT · Answer

The correct Option is "Denitrification"

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