Nitrogen Cycle

Front

What organisms need nitrogen to survive?

Back

All living organisms.

Front

What is the conversion of organic nitrogen into ammonia called?

Back

Ammonification.

Front

What percentage of the atmosphere is composed of nitrogen gas?

Back

78%.

Front

What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?

Back

Nitrogen fixation.

Front

What is the process in which nitrogen circulates and is recycled called?

Back

The nitrogen cycle.

Front

What is nitrogen fixation?

Back

The process of converting nitrogen gas from the atmosphere into ammonia or related compounds in soil.

Front

What role do bacteria play in the nitrogen cycle?

Back

Bacteria help in nitrogen fixation, ammonification, and denitrification.

Front

What is denitrification?

Back

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

Front

What is assimilation in the nitrogen cycle?

Back

The process by which plants and animals incorporate nitrogen into their tissues.

Front

Why is nitrogen important for living organisms?

Back

Nitrogen is a key component of amino acids, proteins, and nucleic acids.