What role do Nitrosomonas bacteria play in the nitrogen cycle?

Decomposers, nitrogen fixation, nitrification, assimilation, ammonification and denitrification with the bacteria involved, and the movement of carbon between reservoirs.

What you need to know

Answer each one before you reveal it.

Your recallNot started

Process

Outline the nitrogen cycle.

Key term

Define decomposers and state the main types of organism involved.

Process

What is assimilation in the nitrogen cycle?

Key term

What is denitrification?

Questions from this subtopic

Each one with the model answer underneath.

1
Define decomposers and state the main types of organism involved.
Model answer
Organisms that break down dead organic matter and waste products, releasing nutrients back into the ecosystem; mainly bacteria and fungi.
2
What role do Nitrosomonas bacteria play in the nitrogen cycle?
Model answer
They are nitrifying bacteria that oxidise ammonia to nitrite.
3
What role do Nitrobacter bacteria play in the nitrogen cycle?
Model answer
They are nitrifying bacteria that oxidise nitrite to nitrate.
4
Describe the role of Azotobacter in the nitrogen cycle.
Model answer
They are free-living nitrogen-fixing bacteria in soil that convert atmospheric nitrogen gas (N₂) into ammonia.
5
Describe the role of Rhizobium in the nitrogen cycle.
Model answer
They are mutualistic nitrogen-fixing bacteria living in root nodules of leguminous plants that convert atmospheric nitrogen into ammonia.
6
What is nitrogen fixation?
Model answer
The conversion of atmospheric nitrogen gas (N₂) into ammonia.

See the rest and revise

Other ways to work this

The same content, four other ways.

What is inside Levo

Six ways to work the same material.

1Closed book

2Open book

3Closed book

The 3-step method, run for you

Answer cold, learn it, then prove it stuck. Levo tracks the jump between your first attempt and your last.

Cell Structure

Biological Molecules

Nucleotides and Nucleic Acids

Enzymes

Cram a whole paper in one sitting

Sort every topic into what you know and what you do not, then drill only the weak ones.

Centrioles consist of .

microtubuleschromosomesribosomes

Blank Blitz makes facts automatic

Rapid timed gap-fills on the terms and numbers you need to recall without thinking.

AA phospholipid contains one glycerol molecule.

BTwo fatty acids bond to the glycerol molecule.

COne phosphate group replaces the third fatty acid.

Build It gets the exam shape right

Assemble a full-mark answer from its marking points, in the order an examiner wants them.

Habitat means the physical place where an organism lives.

TrueFalse

Test It catches misconceptions

Spot the fault in a statement. The traps are the mistakes students actually make.

721941163128510

Brain Breaks between sessions

Short focus games to reset attention, so the next set lands better than the last.

Every question in Ecosystems, on a schedule.

Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.

Start revising, £5 a month See how the method works

Or £46 a year, about £3.83 a month. Cancel anytime.