Photosynthesis is the process by which plants convert the light energy, obtained from the Sun, into useful chemical energy. The process also consumes carbon dioxide and water and produces oxygen. The relevant chemical equation can be written as:
`6 CO_2 + 6 H_2O + sunlight -> C_6H_12O_6 + 6 O_2`
The chemical energy produced in this reaction is stored in Glucose molecule. This molecule is broken down through the process of cellular respiration, which generates ATP (adenosine triphosphate) molecules. The ATP molecules are also known as energy molecules and convert to ADP and release energy, which is used for various functions. The process of cellular respiration can be chemically written as:
`C_6H_12O_6 + 6 O_2 -> 6 CO_2 + 6 H_2O + ATP`
Thus, the solar energy is converted to chemical energy (bound in the glucose molecule) through the process of photosynthesis.
In fact, you may have seen people drinking glucose (mixed in water), especially during summer season. This glucose is instantly broken down, releasing the bound chemical energy and thus, refreshing us.
Hope this helps.
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