Transport & Respiration
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What you'll learn
How the heart and blood vessels move materials around the body, how the lungs exchange gases, and how respiration releases energy, kept clearly separate from breathing and from photosynthesis.
- The heart is a pump
- Arteries carry blood away, veins carry it back
- Blood transports several things at once
- Breathing is NOT the same as respiration
- Respiration: glucose + oxygen becomes carbon dioxide + water + energy
- Respiration is the reverse of photosynthesis
- The lungs exchange gases with the air
- Plants need both photosynthesis and respiration