The Water/Nitrogen/Phosphorus Cycle Flashcard Cycle Quiz

Front

What is the role of decomposers in the nitrogen cycle?

Back

They convert nitrogen compounds into ammonium.

Front

What is the process called when bacteria in the soil convert nitrogen gas into ammonium ions?

Back

Nitrogen Fixation.

Front

What is precipitation?

Back

Water falling as rain, snow, sleet, or hail.

Front

What percentage of our atmosphere is made up of nitrogen gas?

Back

78%.

Front

What is the main thing that carries out Nitrogen Fixation?

Back

Bacteria.

Front

What is the nitrogen cycle?

Back

The process by which nitrogen is converted between its various chemical forms, including nitrogen fixation, nitrification, and denitrification.

Front

What is nitrification?

Back

The process by which ammonia is converted into nitrites and then nitrates by bacteria.

Front

What is denitrification?

Back

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

Front

What role do plants play in the nitrogen cycle?

Back

Plants absorb nitrates from the soil and use them to synthesize proteins.

Front

What is the significance of the phosphorus cycle?

Back

It is essential for the growth of plants and animals, as phosphorus is a key component of DNA, RNA, and ATP.