In green plants, glucose is a product of photosynthesis, from carbon dioxide and water, and is stored as starch. In animals, it is stored as glycogen.
Glucose can take on several different structural forms which can be grouped into two distinct families of stereoisomers (mirror-images). Only one family of these isomers occurs naturally on Earth, and this is derived from the right-handed form of glucose, known as dextrorotatory glucose, D-glucose, or dextrose.
Related category• BIOCHEMISTRY
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