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Nutrition Science and Everyday Application - beta v 0.1

Nutrition Science and Everyday Application - beta v 0.1

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PHOTOSYNTHESIS AND METABOLISM 139<br />

Figure 3.7. The relationship between the reactions of photosynthesis <strong>and</strong> cellular respiration.<br />

The cycling that occurs between photosynthesis <strong>and</strong> cellular respiration is vital to the<br />

health of planet Earth. If there was no way for the carbon dioxide produced through cellular<br />

respiration to be utilized, breathing organisms (like humans <strong>and</strong> animals) would soon<br />

suffocate. Additionally, photosynthetic organisms are at the base of almost every food chain<br />

on the planet, so without these organisms, mass starvation would result. Luckily, this planet<br />

is full of organisms capable of photosynthesis (e.g., trees <strong>and</strong> grass on l<strong>and</strong> <strong>and</strong> algae <strong>and</strong><br />

bacteria in the ocean). Without this vital connection between photosynthesis <strong>and</strong> cellular<br />

respiration, life as we know it would cease to exist.

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