The Journey of Nitro the Nitrogen Atom

Open Ended

What might be the significance of understanding the journey of a nitrogen atom through different environments?

Multiple Choice

Why is nitrogen gas (N₂) considered very stable in the atmosphere?

• Because it has a strong triple bond between nitrogen atoms

• Because it is heavier than oxygen

• Because it reacts easily with other gases

• Because it is always found near the ground

Multiple Choice

What is the process called when lightning breaks the bond in nitrogen gas (N2) and allows it to combine with oxygen to form nitrates (NO3-)?

• Biological fixation

• Assimilation

• Abiotic fixation

• Ammonification

Multiple Select

Which of the following are products formed during the biological fixation of nitrogen in the soil?

• Nitrate (NO3-)

• Ammonia (NH3)

• Ammonium (NH4+)

• Nitrogen gas (N2)

Open Ended

Describe the role of bacteria in the nitrogen cycle as shown in the root nodule resort and plant assimilation stages.

Multiple Choice

Which process involves the conversion of ammonium (NH4+) into nitrites (NO2-) and then into nitrates (NO3-) by specialized bacteria?

• Nitrification

• Denitrification

• Assimilation

• Nitrogen fixation

Open Ended

Explain the role of denitrifying bacteria in the nitrogen cycle and describe the environmental conditions under which they operate.

Open Ended

What part of Nitro the Nitrogen Atom's journey did you find most interesting or surprising, and why?

Multiple Choice

Why is nitrogen gas (N₂) in the atmosphere considered very stable?

• Because it has a strong triple bond between nitrogen atoms

• Because it reacts easily with other elements

• Because it is heavier than oxygen

• Because it is always found in water