Nitrogen Cycle Homework Check in

What converts nitrogen gas into a usable form for plants and animals?

• bacteria

• rain

• fungi

• car exhaust

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Bio.2.1.1

Organisms that need nitrogen to survive.

• only plants

• only animals

• only bacteria

• all living things

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Bio.2.1.1

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

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Bio.2.1.1

Which of these correctly shows the reservoirs where most of Earth's carbon atoms and nitrogen atoms are residing at any given time?

• 
• 
• 
• 
• 

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Bio.2.1.1

What is the name of NH₃?

• ammonia

• ammonium

• nitrate

• nitrite

• nitrous oxide

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Bio.2.1.1

Which of these nitrogen molecules would be present in the atmosphere?

• NH₃

• NH₄⁺

• NO₃^-

• N₂

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Bio.2.1.1

According to this diagram, plants use nitrogen to make _________________________

• carbohydrates

• cellulose

• proteins

• unsaturated fats

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Bio.2.1.1

Nitrates are added to (a)   and are used in ​ (b)   .

• synthetic fertilizer
• agriculture
• roads
• infrastructure
• bacterial fixation

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Bio.2.1.1

Which nitrogen cycle process is occurring when bacteria convert ammonium to nitrite and then into nitrate?

• nitrogen fixation

• nitrification

• denitrification

• ammonification

• assimilation

Tags

Bio.2.1.1