Nitrogen Cycle

Front

What is the formula for atmospheric nitrogen?

Back

N₂

Front

True or False: Plants and animals cannot use nitrogen directly from the air.

Back

True

Front

According to this diagram, plants use nitrogen to make _________________________

Back

proteins

Front

_____ is the conversion of organic nitrogen into ammonia.

Back

Ammonification

Front

How do animals get the nitrogen they need?

Back

From the food they eat.

Front

What is nitrogen fixation?

Back

The process of converting atmospheric nitrogen (N₂) into a form usable by plants, such as ammonia (NH₃).

Front

What role do bacteria play in the nitrogen cycle?

Back

Bacteria convert nitrogen from the atmosphere into forms that plants can absorb and use.

Front

What is denitrification?

Back

The process by which bacteria convert nitrates (NO₃) back into nitrogen gas (N₂), returning it to the atmosphere.

Front

What is the importance of the nitrogen cycle?

Back

It recycles nitrogen in various forms through the ecosystem, essential for plant and animal life.

Front

What is assimilation in the nitrogen cycle?

Back

The process by which plants absorb nitrogen from the soil and incorporate it into their tissues.