Question

In the nitrogen cycle, the bacteria which change proteins to ammonia, are known as _____.
A. Bacteria of decay
B. Denitrifying bacteria
C. Nitrogen fixing bacteria
D. Nitrate bacteria

Answer 1

Hint:- Nitrogen cycle is the biological cycle by which the element nitrogen is converted into many forms. It can be found based on the nitrogen cycle, and based on the nutrients involved in this cycle the change from one nutrient to another nutrient can be found and analyzed.

Complete Answer:- Nitrogen cycle is defined as the recycling phase of nitrogen that includes the processes like ammonification, nitrification, nitrogen fixation and denitrification. The following are some of the definitions which are included in the process of nitrogen cycle. They are of follows:
BACTERIA OF DECAY:
- This is the chemical and physical process involved in decomposition during organic matter is reduced and broken down and reduced to its original elements plant material decomposition.
- This is often referred to as composting.
- This changes proteins to ammonia.
DENITRIFYING BACTERIA:
- This is a diverse group of bacteria which encompass many different types of phyla.
- These bacteria together with denitrifying fungi are capable of performing denitrification in the nitrogen cycle.
- The main example for this is Pseudomonas aeruginosa.
NITROGEN FIXING BACTERIA:
- This is a process by which molecular nitrogen is converted into ammonia.
- There are two types of nitrogen fixing bacteria.
- They are prokaryotic microorganisms.
- These are capable of transforming nitrogen gas into fixed nitrogen that are usable by plants.
NITRATE BACTERIA:
- These are the chemo lithotrophic organisms.
- This includes species of Nitrosomonas, Nitrobacter.
- This thrive in lakes and rivers with high inputs and outputs.

ADDITIONAL INFORMATION:
- This fixes nitrogen in soil.
- They absorb nitrogen from air and fix it in the soil.
- Some of them are very much used in soil fertility.
- Here, the nitrogen content increases and provides fertility to crops.
From the above definitions, it is clear that the correct answer is Option A.

Note:- The process of converting organic nitrogen content into ammonium salts that undergoes nitrification to get converted into usable form. This kind of breakdown is accomplished by decay of bacteria that utilize organic materials for energy and produce ammonia.