D Block - Carbon Cycle

Which process contributes carbon dioxide to the atmosphere?

• aerobic respiration

• photosynthesis

• protein synthesis

• tree farms

Which compound does NOT contain carbon atoms?

• carbon dioxide

• ammonium

• calcium carbonate

• methane

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

Which process removes CO2 from the atmosphere and fixes it in biological molecules?

• photosynthese

• aerobic respiration

• anaerobic respiration

• Nitrification

How does carbon move between living organisms?

• feeding and assimilation

• photosynthesis

• fossilisation

• decomposition

Which two types of organisms breakdown dead matter?

• decomposers

• detritivores

• plants

• herbivores

In what form is carbon stored for long periods of time when dead material is not broken down?

• fossil fuels

• cellulose

• starch

• glycogen

How is CO2 released from fossil fuels?

• combustion

• respiration

• photosynthesis

• denitrification

Select the biological molecules that contain carbon (select as many as you think are correct)

• carbohydrates

• proteins

• lipids

• water

Which of the following are species that are decomposers?

• fungi

• bacteria

• worms

• wood lice