Nitrogen Cycle #3

Front

What is the formula for atmospheric nitrogen?

Back

N₂

Front

According to this diagram, plants use nitrogen to make _________________________

Back

proteins

Front

What organism changes atmospheric nitrogen into usable nitrogen for plants?

Back

Nitrogen-fixing bacteria

Front

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

Back

fixing

Front

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

Back

Ammonification and nitrification

Front

What is the process by which nitrogen gas is converted into ammonia?

Back

Nitrogen fixation

Front

What role do decomposers play in the nitrogen cycle?

Back

They break down organic matter, releasing nitrogen back into the soil.

Front

What is nitrification?

Back

The process of converting ammonia into nitrites and then nitrates.

Front

What is denitrification?

Back

The process of converting nitrates back into nitrogen gas, returning it to the atmosphere.

Front

What is ammonification?

Back

The process of converting organic nitrogen into ammonia.