Nitrogen in the Earth's Atmosphere

What is the chemical formula for nitrogen?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Which of these is NOT a purpose of nitrogen?

• Making fertilizer

• Making explosives

• Making ammonia

• Making anesthesia

The nitrogen cycle helps plants to synthesise chlorophyll.

• True

• False

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which organisms are vital to the cycle of nitrogen?

• 
• 
• 
• 

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is the first stage of the nitrogen cycle?

• Nitrification

• Nitrogen fixation

• Assimilation

• Ammonification

Tags

NGSS.MS-LS2-3

Which of these is not a stage in the nitrogen cycle?

• Assimilation

• Nitrification

• Denitrification

• Gentrification

What % of the Earths atmosphere is nitrogen?

• 78%

• 79%

• 76%

• 77%

Plants and organisms take up nitrate and ammonium ions for growth and to build proteins and nucleic acids.

What stage of the nitrogen cycle is this?

• Nitrification

• Ammonification

• Assimilation

• Denitrification

Why is the nitrogen cycle important?

• It transforms nitrogen into another form so that other living organisms can use it

• It makes sure the weather is good

• Nitrogen is a component of DNA, proteins and chlorophyl in plant

• Helps plants to synthesise chlorophyl

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Nitrogen is a tasteless, colourless, and odorless gas

• True

• False