the respiratory system

Human respiratory system. Image credit anatrik.org ZIMSEC O Level Combined Science Notes: The respiratory system and gaseous exchange

• The respiratory system is responsible for gaseous exchange and breathing so that oxygen is taken into the body and carbon dioxide is released from the body.
• Mammals including […]
  

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Lime water is used to test for carbon dioxide. Image weebly.com ZIMSEC O Level Combined Science Notes: Inhaled vs Exhaled air experiment: Method 1

Aim: Test to compare the composition of exhaled and inhaled air.

Materials: Limewater (to test for the presence […]

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Potted plant. Image credit artificialplantsandtrees.com ZIMSEC Combined Science Revision Notes: Do plants release carbon dioxide when they respire?

Aim: To determine whether all living things, including plants, release carbon dioxide when they respire.

Materials: bell jar or a large container, 3 boiling tubes/flasks glass or rubber tubing, lungs, suction […]

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