TMS Nitrogen Cycle

Nitrogen is found in all of the following EXCEPT:

• Atmosphere

• DNA (Deoxyribonucleic Acid)

• Proteins

• Carbohydrates

Which of the following forms of nitrogen is considered toxic?

• NO2

• NH3

• NH4

• N2

Why is nitrogen gas hard to break?

• It is a double bond

• It is a triple bond

• It has no bonds

• It is resistant to bacteria

From nitrogen gas, nitrogen is converted by nitrogen fixing bacteria into:

• Pneumonia

• Nitrates

• Nitrites

• Ammonia

What form of nitrogen is used by plants?

• Nitrites

• Ammonia

• Nitrates

• Nitrogen gas

How do animals (including humans) get their nitrogen?

• From the soil

• From consuming plants

• From water

• From carbonization and oxidation

In what 2 ways do animals put nitrogen back into the nitrogen cycle?

• Their waste

• Their sweat

• Breathing it out

• Dying / decomposing