Nitrogen Cycle

Front

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

Back

Nitrogen fixation.

Front

What gas makes up 78% of our atmosphere?

Back

Nitrogen.

Front

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

Back

Through the action of bacteria and lightning.

Front

What is the formula for atmospheric nitrogen?

Back

N₂.

Front

Do all plants have nitrogen-fixing bacteria in their roots?

Back

False.

Front

What role do nitrogen-fixing bacteria play in the nitrogen cycle?

Back

They convert atmospheric nitrogen into ammonia, which plants can use.

Front

What is the term for the process where nitrogen is converted back into nitrogen gas?

Back

Denitrification.

Front

What is the significance of the nitrogen cycle in ecosystems?

Back

It recycles nitrogen, which is essential for the growth of plants and animals.

Front

What are the two main types of nitrogen-fixing bacteria?

Back

Free-living bacteria and symbiotic bacteria.

Front

What is ammonification in the nitrogen cycle?

Back

The process of converting organic nitrogen into ammonia.