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Photosynthesis ( FOH-tÉ™-SINTH-É™-sis) is a biological process used by many cellular organisms to convert light energy into chemical energy, which is stored in organic compounds that can later be metabolized through cellular respiration to fuel the organism's activities. The term usually refers to oxygenic ______, where oxygen is produced as a byproduct and some of the chemical energy produced is stored in carbohydrate molecules such as sugars, starch, glycogen and cellulose, which are synthesized from endergonic reaction of carbon dioxide with water. Most plants, algae and cyanobacteria perform ______; such organisms are called photoautotrophs. Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere, and supplies most of the biological energy necessary for complex life on Earth.Some bacteria also perform anoxygenic ______, which use bacteriochlorophyll to split hydrogen sulfide as a reductant instead of wat.
photosynthesis
Convert light energy into chemical energy
organisms
Oxygen is produced as a byproduct
oxygenic
Organisms are called ______
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Split hydrogen sulfide as a reductant instead of wat
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