Nitrogen Cycle Flashcard

Front

According to the diagram, which terrestrial (land) organisms are able to obtain atmospheric nitrogen?

Back

Nitrogen-fixing bacteria

Front

What transformations must occur before nitrogen from the atmosphere can be used by plants?

Back

Ammonification and nitrification

Front

What organism changes atmospheric nitrogen into usable nitrogen for plants?

Back

Nitrogen-fixing bacteria

Front

What converts nitrogen gas into a usable form for plants and animals?

Back

bacteria

Front

According to this diagram, plants use nitrogen to make _________________________

Back

proteins

Front

What is a correct path that nitrogen could take? Options: air -> animals -> plants -> bacteria, animals -> air -> bacteria -> plants, bacteria -> air -> plants -> animals, air -> bacteria -> plants -> animals

Back

air -> bacteria -> plants -> animals

Front

How is nitrogen "fixed" into a usable form for plants?

Back

Through action of bacteria and lightning

Front

What is the formula for atmospheric nitrogen?

Back

N₂

Front

Can plants and animals use nitrogen directly from the air?

Back

True

Front

Nitrogen-______ bacteria convert nitrogen gas to compounds plants can absorb.

Back

fixing