iGCSE Carbon Cycle

Which process(es) release carbon dioxide into the atmosphere?

• respiration

• combustion

• photosynthesis

• feeding

Which process(es) take carbon dioxide out of the atmosphere?

• respiration

• combustion

• photosynthesis

• feeding

What type of organism receives carbon present in dead plants and animals?

• producer

• primary consumer

• secondary consumer

• decomposer

Burning fossil fuel has which effect in the carbon cycle?

• It removes carbon dioxide from the atmosphere.
• It puts carbon dioxide under the ground.
• It adds carbon dioxide to the atmosphere.
• It has no effect in the carbon cycle.

Tags

NGSS.MS-ESS2-1

Carbon is important for which molecules

• carbohydrates

• proteins

• lipids (fats)

• water

What molecule is carbon first fixed into by plants in photosynthesis?

• glucose

• protein

• cellulose

• starch

How is carbon transfered between organisms in a food chain?

• feeding and assimilation

• decomposition

• sedimentation

• respiration

Which two groups of organisms breakdown dead and decaying matter?

• decomposers

• detritivores

• animals

• plants

What can happen to the carbon dead organisms if they end up in an area with low oxygen?

• fossilise into fossil fuels

• decomposed

• respire

• fossilise into limestone

Which is the correct balanced symbol equation for aerobic respiration?

• 1

• 2

• 3

• 4