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Primary metabolism, which includes processes like photosynthesis and respiration, is vital for the production of fundamental compounds that support cell functions. Photosynthesis converts light energy into chemical energy, storing it in glucose, a basic energy source for plants and, indirectly, for other organisms through food chains. Respiration breaks down glucose to release energy in the form of ATP, which powers various cellular activities. These processes not only sustain the organism's growth and maintenance but also produce oxygen and organic compounds like carbohydrates, proteins, and lipids. These compounds are essential for human consumption and provide raw materials for pharmaceuticals, biofuels, and other industrial applications.