13. Nutrient Cycling Quizizz

The oceans absorb much of the carbon dioxide in the atmosphere. The combustion of fossil fuels has increased carbon dioxide ocean concentrations. What adverse effect does this have on marine life?

• Heterotrophs consume more phytoplankton.

• Phytoplankton have increased rates of photosynthesis.

• Corals deposit less calcium carbonate to form skeletons.

• Increased pH reduces enzyme activity in marine organisms.

The diagram shows the carbon cycle. Which two processes correspond to the labelled arrows? (HINT: Anabolism is the building of organic molecules in cells, catabolism is the breaking down of organic molecules in cells)

• K is combustion and L is catabolism.

• J is anabolism and K is respiration

• J is combustion and K is respiration.

• J is anabolism and L is catabolism.

The diagram shows the carbon cycle. Which of the following major storage reservoirs of carbon, stored in the form of carbon dioxide, is not represented in this diagram?

• Algae

• Soil Bacteria

• The Moon

• The Ocean

The diagram shows the carbon cycle. Based on the diagram above, which of the following processes reduces the amount of carbon dioxide in the atmosphere?

• Photosynthesis

• Cellular Respiration

• Decomposition

• Burning of Fossil Fuels

The diagram shows the carbon cycle. Based on the diagram above, which process most directly results in the storage of carbon as coal and oil over millions of years?

• Photosynthesis

• Cellular Respiration

• Decomposition

• Burning of Fossil Fuels

Which of the following pathways indicate how nitrogen is added to the largest nitrogen reservoir?

• Nitrifying bacteria and lightning

• Decomposing plant and animal material

• Denitrifying bacteria and volcanic activity

• Nitrates taken up by plant roots

The diagram represents the nitrogen cycle. In the nitrogen cycle illustrated above, nitrification occurs in which of the following steps?

• Step 1

• Step 2

• Step 3

• Step 4

Which of the following would best describe X in the diagram above?

• Bacteria play an important role in the conversion of compounds from the atmospheric gas to the form of the compound taken up by plants.

• Phosphorus and nitrogen are both required for plant growth.

• Volcanic eruptions are a major source of non-anthropogenic inputs.

• Processes include weathering and erosion.

The diagram shows the amount of phosphorus measured in teragrams (1 teragram = 1x10^12 grams), in the various reservoirs of the phosphorus cycle. Which of the following is the best explanation for why there is such a small amount of phosphorus that moves into aquatic systems?

• Phosphorus is highly stable in the atmosphere and remains there for long periods of time.

• The amount of phosphorus in the cycle has been greatly reduced because of the use of catalytic converters in automobiles.

• There is not a gaseous phase of the phosphorus cycle, and therefore the movement of phosphorus into oceanic reservoirs is very slow.

• The phosphorus cycle occurs so rapidly that it does not exist in any one reservoir for a very long time.

The diagram shows the amount of phosphorus measured in teragrams (1 teragram = 1x10^12 grams), in the various reservoirs of the phosphorus cycle. According to the diagram, the movement of phosphorus between biological organisms and soil is in a steady state in an undisturbed system. Which of the following best explains the reason for this steady movement?

• Phosphorus is taken up by plants during photosynthesis to create carbohydrates.

• A decrease in buffer zones prevents phosphorus runoff in waterways.

• There is a rapid influx of phosphorus from the weathering of rocks.

• Readily available organic phosphorus in the soil is assimilated by plants.