Nitrogen Cycle

Organisms that need nitrogen to survive.

• only plants

• only animals

• only bacteria

• all living things

Tags

NGSS.MS-LS2-1

How is nitrogen "fixed" into a usable form for plants?

• Through action of bacteria only

• Through lightning only

• Through action of bacteria and lightning

• Through photosynthesis

Tags

NGSS.MS-LS2-3

How do animals get the nitrogen they need?

• From the air they breathe

• From the water they drink

• From the food they eat

• From the sun

Tags

NGSS.MS-LS1-7

NGSS.MS-LS2-3

Gas that makes up 78% of our atmosphere.

• Oxygen

• Nitrogen

• Hydrogen

• Carbon Dioxide

What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?

• nitrogen composition

• nitrogen fixation

• ammonia

• denitrification

Tags

NGSS.MS-LS2-3

What is the formula for atmospheric nitrogen?

• N

• N₂

• NH₃

• NO₃

Tags

NGSS.MS-PS1-1

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

Plants and animals cannot use nitrogen directly from the air.

• True

• False

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Bacteria create a form of nitrogen that animals can use directly.

• True

• False

Tags

NGSS.MS-LS2-3

All plants have nitrogen fixing bacteria in their roots.

• True

• False

Tags

NGSS.MS-LS2-1