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A structure in the cells of plants and some other organisms that captures energy from sunlight and uses it to produce food.


A green pigment found in the chloroplasts of plants, algae, and some bacteria


The process by which cells break down molecules to release energy without using energy.




The process by which plants and some other organisms capture light energy and use it to make food from carbon dioxide and water.


A colored chemical compound that absorbs light, producing color.


The process by which cells break down simple food molecules to release the energy they contain.


The small openings on the undersides of most leaves through which oxygen and carbon dioxide can move.

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