Nitrogen Cycle Kahoot

Front

What is the nitrogen cycle?

Back

The nitrogen cycle is the process through which nitrogen is converted between its various chemical forms, circulating through the atmosphere, soil, and living organisms.

Front

Why can't plants and animals use nitrogen directly from the air?

Back

Plants and animals cannot use nitrogen directly from the air because it exists as N2, which has a strong triple bond that they cannot break.

Front

What is the chemical formula for gaseous nitrogen?

Back

N2

Front

What role do bacteria play in the nitrogen cycle?

Back

Bacteria help in the process of nitrogen fixation, converting atmospheric nitrogen into forms that plants can absorb.

Front

What happens to nitrogen after plants and animals die?

Back

Decomposition returns nitrogen to the soil and atmosphere, allowing it to be reused in the nitrogen cycle.

Front

What is nitrogen fixation?

Back

Nitrogen fixation is the process of converting atmospheric nitrogen (N2) into ammonia (NH3) or related compounds, making it available for use by plants.

Front

What percentage of the atmosphere is nitrogen?

Back

Approximately 78% of the atmosphere is nitrogen.

Front

What is the significance of the triple bond in nitrogen gas (N2)?

Back

The triple bond in nitrogen gas makes it very stable and unreactive, preventing most organisms from using it directly.

Front

What is the process of nitrification?

Back

Nitrification is the process by which ammonia is converted into nitrites (NO2-) and then into nitrates (NO3-), which plants can absorb.

Front

What is denitrification?

Back

Denitrification is the process by which nitrates are converted back into nitrogen gas (N2), returning it to the atmosphere.