Nitrogen Cycle

Front

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

Back

nitrogen fixation

Front

How much of the atmosphere is composed of nitrogen gas?

Back

78%

Front

Why can't we get nitrogen by breathing if the atmosphere is 78% N₂?

Back

We have no mechanism to break the triple bond of nitrogen between the atoms.

Front

_____ is the conversion of organic nitrogen into ammonia

Back

Ammonification

Front

What converts nitrogen gas into a usable form for plants and animals? Options: bacteria, rain, fungi, car exhaust

Back

bacteria

Front

What process occurs when dead plant and animal matter decomposes and nitrogen is released back into the atmosphere?

Back

Denitrification

Front

According to this diagram, plants use nitrogen to make _________________________

Back

proteins

Front

A correct path that nitrogen could take would be Options: air -> animals -> plants -> bacteria, animals -> air -> bacteria -> plants, bacteria -> air -> plants -> animals, air -> bacteria -> plants -> animals

Back

air -> bacteria -> plants -> animals

Front

The biological transformation of ammonia or ammonium to nitrites and nitrates.

Back

nitrification

Front

Which process makes nitrites from ammonia? Options: ammonification, denitrification, nitrification, nitrogen fixation

Back

nitrification