When an organism uses chemical energy to produce carbohydrates, the process is called ?

Photosynthesis is the main answer but if this isn't one put releasing odor

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Explanation:

Chlorophyll is necessary for photosynthesis:  it plays various functions in photosynthesis as it absorb the energy of sunlight and convert it into chemical energy. This chemical energy is used in the formation of carbohydrates.

And in photosynthesis, chlorophyll absorbs sun light and convert in into energy and this energy then transforms water and carbon dioxide into oxygen and carbohydrates.

Chlorophylls  are of various types, some chlorophyll can be involved in the process of photosynthesis in plants and some others in algae.