Carbon and Nitrogen Cycles

What process converts nitrogen gas into a biologically useful (fixed) form?

• Respiration

• Assimilation

• Denitrification

• Nitrogen fixation

Which organisms play the largest role in converting nitrogen into various usable forms and back to a gas form?

• rabbits

• bacteria

• plants

• worms

Tags

NGSS.MS-LS2-3

How do animals get nitrogen to make important biological molecules?

• Breathe it in through the air

• Fix it from nitrogen gas

• Consume other organisms

• Assimilate it through the soil

Tags

NGSS.MS-LS2-3

Which of the following cannot fix nitrogen?

• lightning

• fertilizer production

• combustion

• rain

Tags

NGSS.MS-LS2-3

Which of the following is not a possible process that results in ammonification?

• photosynthesis

• decomposition

• nitrogen fixation

• fertilizer production

Tags

NGSS.HS-LS2-3

Carbon moves between which two reservoirs through the process of diffusion?

• atmosphere & biosphere

• atmosphere & lithosphere

• lithosphere & biosphere

• hydrosphere & atmosphere

What happens to carbon during the process of photosynthesis?

• CO₂ is released by plants

• CO₂ is taken up by plants

• organic carbon is taken up through plant roots

• carbon is lost through heat

Tags

NGSS.MS-LS1-6

All the gases surrounding Earth are known collectively as the...

• hydrosphere

• biosphere

• atmosphere

• lithosphere

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

The process of breathing in oxygen and releasing carbon dioxide into the air (or water) is...

• Assimilation

• Decomposition

• Photosynthesis

• Respiration

Which of the following best describes weathering and erosion?

• when it rains on rocks

• decay of dead organisms

• break down of rocks that wash into the water

• when a volcano erupts

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2