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Y10- Carbon & Nitrogen Cycle

Last updated 3 months ago

15 questions

Note from the author:

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Formative Generation Completed!

Formative Generation Completed!

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Question 15

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What is the primary role of plants in the carbon cycle?

They absorb carbon and release oxygen

They release carbon but don’t absorb it

They neither absorb nor release carbon

They manufacture carbon

The nitrogen cycle is a biogeochemical cycle that transforms nitrogen into various forms within the biosphere.

True

False

Which organisms play a key role in the nitrogen cycle?

Birds

Bacteria

Trees

Fish

How are humans disrupting the carbon cycle?

By releasing too much carbon dioxide through burning fossil fuels

By cutting down trees

Both of the above

Humans don’t disrupt the carbon cycle

Which processes release carbon dioxide back into the atmosphere?

Photosynthesis

Respiration

Decomposition

Fossil fuel combustion

What process converts gaseous nitrogen into ammonia?

Nitrification

Denitrification

Nitrogen fixation

Ammonification

Decomposers break down dead organic matter, releasing carbon back into the atmosphere.

True

False

Which of the following processes are part of the nitrogen cycle?

Nitrification

Denitrification

Nitrogen fixation

Ammonification

What is the ultimate source of carbon for life on earth?

Animals

Plants

The Sun

The Atmosphere

Nitrogen is essential for the synthesis of proteins and DNA.

True

False

Which process of nitrogen cycle is performed by anaerobic bacteria?

Nitrification

Denitrification

Nitrogen Fixation

Ammonification

Which sources contribute to the carbon cycle?

Respiration

Fossil fuels

Decay of organic matter

Volcanic eruption

What form can nitrogen be used by most organisms?

Ammonia

Nitrogen Gas

Nitrites

Nitrates

Carbon is a renewable resource.

True

False

Why is carbon important to life?

It forms the genetic code (DNA)

It is a basic building block of life

It forms the atmosphere

It is a source of energy