Nitrogen Cycle

Front

What is the nitrogen cycle?

Back

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms, including nitrogen gas, nitrates, and ammonia, in the environment.

Front

What role do plants play in the nitrogen cycle?

Back

Plants absorb nitrates from the soil, which they use to synthesize proteins and other important compounds.

Front

What is the primary function of nitrogen-fixing bacteria?

Back

Nitrogen-fixing bacteria convert nitrogen gas from the atmosphere into ammonia, which can be used by plants.

Front

What is nitrification?

Back

Nitrification is the process by which ammonia is converted into nitrates by bacteria in the soil.

Front

What is denitrification?

Back

Denitrification is the process by which nitrates are converted back into nitrogen gas, returning it to the atmosphere.

Front

How do decomposers contribute to the nitrogen cycle?

Back

Decomposers break down dead organic matter, releasing nitrogen back into the soil in the form of ammonia.

Front

What percentage of the atmosphere is nitrogen gas?

Back

Approximately 78% of the atmosphere is composed of nitrogen gas.

Front

Can animals use nitrogen gas directly?

Back

No, animals cannot use nitrogen gas directly; they rely on plants or other organisms to convert it into usable forms.

Front

What is ammonification?

Back

Ammonification is the process by which organic nitrogen from dead organisms is converted into ammonia by decomposers.

Front

What is the significance of nitrates in the nitrogen cycle?

Back

Nitrates are a form of nitrogen that plants can absorb and utilize for growth.