Nitrogen Cycle

What is the most common form of nitrogen in our atmosphere?

• Oxygen

• Carbon

• Ammonia

• Molecular nitrogen

Which organisms are responsible for fixing nitrogen from the air?

• Plants

• Animals

• Bacteria

• Fungi

What is the form of nitrogen that is usable by plants?

• Ammonia

• Nitrites

• Nitrates

• Molecular nitrogen

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which organic molecule contains nitrogen?

• Glucose

• Amino acid

• Lipid

• DNA

What is the function of ATP in biological systems?

• Energy storage

• Cellular respiration

• DNA replication

• Protein synthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

NGSS.MS-LS2-3

What is the role of bacteria in the nitrogen cycle?

• Fixing carbon

• Producing oxygen

• Fixing nitrogen

• Breaking down ammonia

What happens to nitrogen when an organism dies?

• It disappears

• It forms out of nowhere

• It gets released back into the atmosphere

• It gets stored in the soil

Tags

NGSS.MS-LS2-3

What are the rate-limiting factors for plant growth?

• Carbon and oxygen

• Nitrogen and phosphorous

• Ammonia and nitrites

• Bacteria and fungi

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1