Cycles (carbon and nitrogen)

Last updated almost 2 years ago

12 questions

Note from the author:

1

Review Cycle (mostly the carbon cycle, one nitrogen cycle question) for the MCAS

Which of the processes shown in the diagram is responsible for cycling carbon from the atmosphere to the biosphere?

combustion

decomposition

photosynthesis

respiration

The geosphere is the earth's crust (oil deposits and rock). Which of the processes shown in the diagram is responsible for cycling carbon from the geosphere back into the atmosphere? Hint: you are burning fossil fuels found in the earth

combustion

decomposition

photosynthesis

respiration

Which of the following occurs during photosynthesis?

carbon is dissolved in water to form a solution

carbon is stored in plants as glucose (complex carbon chains)

carbon compounds are absorbed by plant roots from soil

carbon compounds are broken down into simpler substances

The diagram below represents a cycle in an ecosystem. Which of the following do the arrows most likely represent?

heat

sunlight

water

nutrients

Carbon fixation is an important part of the carbon cycle. Carbon fixation is the conversion of carbon dioxide into organic compounds such as glucose.

Which of the following organisms cannot fix carbon?

grass

green algae

mushrooms

oak trees

Volcanic eruptions add carbon dioxide to the atmosphere. Which of the following also adds carbon dioxide directly to the atmosphere?

burning a forest

forming fossil fuels

evaporation of a puddle

erosin of rocks

Earth’s atmosphere is 20.9% molecular oxygen (O2). Which process provides most of the oxygen in the atmosphere?

cellular respiration

osmosis

transpiration

photosynthesis

What biological process removes carbon from the atmopshere?

cellular respiration

transpiration

fertilization

photosynthesis

What biological process adds carbon to the atmopshere?

cellular respiration

transpiration

fertilization

photosynthesis

In the past 100 years, levels of atmospheric carbon dioxide have increased as the result of burning fossil fuels. Other processes in the carbon cycle have absorbed some of the carbon released by this combustion. Which of the following most likely have absorbed excess carbon released by combustion?

animals

glaciers

plants

rocks

If a law was passed to reduce the amount of fossil fuels emitted each year, what would happen to the amount of carbon released into the atmosphere?

the amount of carbon released would increase

the amount of carbon released would decrease

the amount of carbon released would stay the same

Which of the following occurs during decomposition?

carbon is dissolved in water to form a solution

carbon is stored in animals as complex carbon compounds

carbon compounds are absorbed by plants roots from the soil

carbon compounds are broken down into simpler substances

Which of the processes shown in the diagram is responsible for cycling carbon from the atmosphere to the biosphere?

combustion

decomposition

photosynthesis

respiration

The geosphere is the earth's crust (oil deposits and rock). Which of the processes shown in the diagram is responsible for cycling carbon from the geosphere back into the atmosphere? Hint: you are burning fossil fuels found in the earth

combustion

decomposition

photosynthesis

respiration

Which of the following occurs during photosynthesis?

carbon is dissolved in water to form a solution

carbon is stored in plants as glucose (complex carbon chains)

carbon compounds are absorbed by plant roots from soil

carbon compounds are broken down into simpler substances

The diagram below represents a cycle in an ecosystem. Which of the following do the arrows most likely represent?

heat

sunlight

water

nutrients

Carbon fixation is an important part of the carbon cycle. Carbon fixation is the conversion of carbon dioxide into organic compounds such as glucose.

Which of the following organisms cannot fix carbon?

grass

green algae

mushrooms

oak trees

Volcanic eruptions add carbon dioxide to the atmosphere. Which of the following also adds carbon dioxide directly to the atmosphere?

burning a forest

forming fossil fuels

evaporation of a puddle

erosin of rocks

Earth’s atmosphere is 20.9% molecular oxygen (O2). Which process provides most of the oxygen in the atmosphere?

cellular respiration

osmosis

transpiration

photosynthesis

What biological process removes carbon from the atmopshere?

cellular respiration

transpiration

fertilization

photosynthesis

What biological process adds carbon to the atmopshere?

cellular respiration

transpiration

fertilization

photosynthesis

In the past 100 years, levels of atmospheric carbon dioxide have increased as the result of burning fossil fuels. Other processes in the carbon cycle have absorbed some of the carbon released by this combustion. Which of the following most likely have absorbed excess carbon released by combustion?

animals

glaciers

plants

rocks

If a law was passed to reduce the amount of fossil fuels emitted each year, what would happen to the amount of carbon released into the atmosphere?

the amount of carbon released would increase

the amount of carbon released would decrease

the amount of carbon released would stay the same

 Which of the following occurs during decomposition?

carbon is dissolved in water to form a solution

carbon is stored in animals as complex carbon compounds

carbon compounds are absorbed by plants roots from the soil

carbon compounds are broken down into simpler substances

Cycles (carbon and nitrogen)

Cycles (carbon and nitrogen)

Which of the processes shown in the diagram is responsible for cycling carbon from the atmosphere to the biosphere?

The geosphere is the earth's crust (oil deposits and rock). Which of the processes shown in the diagram is responsible for cycling carbon from the geosphere back into the atmosphere? Hint: you are burning fossil fuels found in the earth

Which of the following occurs during photosynthesis?

The diagram below represents a cycle in an ecosystem. Which of the following do the arrows most likely represent?

Carbon fixation is an important part of the carbon cycle. Carbon fixation is the conversion of carbon dioxide into organic compounds such as glucose.Which of the following organisms cannot fix carbon?

Volcanic eruptions add carbon dioxide to the atmosphere. Which of the following also adds carbon dioxide directly to the atmosphere?

Earth’s atmosphere is 20.9% molecular oxygen (O2). Which process provides most of the oxygen in the atmosphere?

What biological process removes carbon from the atmopshere?

What biological process adds carbon to the atmopshere?

In the past 100 years, levels of atmospheric carbon dioxide have increased as the result of burning fossil fuels. Other processes in the carbon cycle have absorbed some of the carbon released by this combustion. Which of the following most likely have absorbed excess carbon released by combustion?

If a law was passed to reduce the amount of fossil fuels emitted each year, what would happen to the amount of carbon released into the atmosphere?

Which of the following occurs during decomposition?

Carbon fixation is an important part of the carbon cycle. Carbon fixation is the conversion of carbon dioxide into organic compounds such as glucose.

Which of the following organisms cannot fix carbon?