Give the structure of glucose. How would you classify a sugar as ‘D’ or ‘L’?

Glucose a simple monosaccharide sugar, is one of the most important carbohydrates and is used as a source of energy in animals and plants. Glucose is one of the main products of photosynthesis and starts respiration. The natural form (D-glucose) is also referred to as dextrose, especially in the food industry.

A Haworth projection representation of the structure of glucose

Glucose (C₆H₁₂O₆) is a hexose -- a monosaccharide containing six carbon atoms. Glucose is an aldehyde (contains a -CHO group). Five of the carbons plus an oxygen atom form a loop called a "pyranose ring", the most stable form for six-carbon aldoses. In this ring, each carbon is linked to hydroxyl and hydrogen side groups with the exception of the fifth atom, which links to a 6th carbon atom ________ _________ _____ _____ _______ _________ ________ ________ _______ __________.
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