Carbon and Oxygen Cycles (Ch 16)

The process of burning fuels that releases carbon dioxide into the atmosphere

• combustion

• transpiration

• nitrification

• eutrophication

Converting inorganic carbon into organic carbon

• nitrification

• cellular respiration

• carbon fixation

• transpiration

Process of living organisms that uses carbohydrates and releases carbon dioxide

• photosynthesis

• carbon fixation

• cellular respiration

• combustion

Sugars made by plants

• carbohydrates

• lipids

• proteins

• nucleic acids

Plant process that converts carbon dioxide into carbohydrates

• cellular respiration

• photosynthesis

• transpiration

• nitrification

Which is the most important reason that the recycling of carbon is essential to living organisms? (5.2)

• Carbon is needed in the soil

• Carbon is needed for fuel combustion

• carbon is needed to make organic molecules

• Carbon is needed to make coal

In what form is most carbon found in the atmosphere? (5.2)

• CO

• CO₂

• H₆C₁₂O₆

• H₂CO₃

An increase in the number of consumers, including humans, would have what effect on an ecosystem? (5.2)

• It would increase the amount of carbon dioxide released in the atmosphere

• It would increase the amount of elemental carbon dissolved in the ocean

• It would decrease the amount of fossil fuels that are formed

• it would decrease the amount of carbon dioxide removed from the atmosphere

Through what process do living organisms release carbon into the atmosphere? (5.2)

• Photosynthesis

• Cellular respiration

• transpiration

• Combustion

Which two of the following human activities has the greatest potential for disrupting balance in the carbon cycle? (5.3)

• Restoring forests by planting trees

• Overfishing the oceans

• clearing forests to harvest timber

• Burning fossil fuels for energy

• Increasing the use of solar energy panels