Nitrogen and Phosphorus Cycle Quiz

What are the two elements that are at a premium in biological systems because they're hard to get at?

• Oxygen and Carbon

• Sodium and Chlorine

• Nitrogen and Phosphorus

• Hydrogen and Potassium

Which bacteria can convert atmospheric nitrogen into ammonia?

• Decomposers

• Nitrifying Bacteria

• Denitrifying Bacteria

• Nitrogen Fixing Bacteria

What is the only element that doesn't involve the atmosphere in its cycle?

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What is the main ingredient of synthetic fertilizers?

• Nitrogen

• Oxygen

• Phosphorus

• Carbon

Tags

NGSS.HS-PS1-2

What is the enzyme that can break the triple bond of nitrogen gas?

• Nitrate Reductase

• Nitrogenase

• Ammonium Oxidase

• Phosphatase

What is the percentage of nitrogen in the atmosphere?

• 90%

• 50%

• 78%

• 21%

Which organisms are responsible for metabolizing nitrogen oxides and turning them back into nitrogen gas?

• Decomposers

• Nitrifying Bacteria

• Nitrogen Fixing Bacteria

• Denitrifying Bacteria

Tags

NGSS.HS-LS2-3

What is the main source of inorganic phosphates?

• Biosphere

• Atmosphere

• Lithosphere

• Hydrosphere

What is the main form of nitrogen that plants can assimilate?

• Nitrogen Gas

• Nitrite

• Ammonium

• Nitrate

What is the main form of phosphorus found in rocks?

• Phosphates

• Phosphorus Gas

• Phosphoric Acid

• Phosphine