Photosynthesis and cellular respiration are two key processes in the carbon cycle, but they play opposite roles. Photosynthesis, performed by plants and some microorganisms, absorbs carbon dioxide from the atmosphere and uses it to produce glucose and oxygen. In contrast, cellular respiration occurs in both plants and animals, breaking down glucose to release energy, and as a byproduct, it releases carbon dioxide back into the atmosphere. This continuous exchange of carbon dioxide and oxygen between photosynthesis and cellular respiration helps regulate the levels of carbon in nature, ensuring a balanced carbon cycle.
A fellow student is studying the differences between photosynthesis and cellular respiration. The student asks you to explain how cellular respiration uniquely contributes to the carbon cycle. In 3–5 sentences, describe the different ways that both photosynthesis and cellular respiration contribute to the carbon cycle. Make it short and simple.
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