Nitrogen and Phosphorus Cycle

The conversion of atmospheric nitrogen into ammonia, a form of nitrogen plants can readily use, is called -

• denitrification.

• ammonification.

• nitrogen fixation.

• nitrification.

Tags

NGSS.MS-LS2-3

To obtain the nitrogen they need, animals depend on many different microscopic ____________________ to convert nitrogen at all stages of the nitrogen cycle.

• protozoa

• bacteria

• worms

• insects

Tags

NGSS.MS-LS2-3

Decomposers make ammonium in the soil during the process of -

• nitridication.

• nitrogen fixation.

• denitrification.

• ammonification.

Tags

NGSS.MS-LS2-3

(a)   converts ammonia and ammonium into nitrite and nitrate.

Tags

NGSS.MS-LS2-3

Select all answers below that are stages of the nitrogen cycle.

• Nitrogen fixation

• Diffusion

• Ammonification

• Nitrification

Tags

NGSS.MS-LS2-3

What process occurs when dead plant and animal matter decomposes and nitrogen is released back into the atmosphere?

• Assimilation

• Fixation

• Ammonification

• Denitrification

Tags

NGSS.MS-LS2-3

A correct path that nitrogen could take would be

• air -> animals -> plants -> bacteria

• animals -> air -> bacteria -> plants

• bacteria -> air -> plants -> animals

• air -> bacteria -> plants -> animals

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Organisms require nitrogen to make which of the following?

• glucose and starch

• lipids and nucleic acids

• proteins and nucleic acids

• carbohydrates and proteins

Which of the following statements is true of the phosphorus cycle?

• Phosphorus enters the atmosphere as phosphates.
• The phosphorus cycle utilizes the processes of erosion, and weathering.
• Phosphates are used in carbohydrate and glucose storage.
• The phosphorus cycle utilizes bacteria to breakdown phosphates and make them available for plants.

Tags

NGSS.MS-LS2-3

What role do decomposers play in the phosphorous cycle?

• absorb phosphorous 
• release phosphorous into atmosphere
• return phosphorous into the soil
• combustion

Tags

NGSS.MS-LS2-3