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The beta (β) Fructose molecule - rotatable in 3 dimensions. Fructose (fruit sugar) is a monosaccharide - formula C 6 H 12 O 6. It shares the same empirical formula with other 6-carbon (hexose) sugars such as glucose and galactose.
Although fructose is a hexose (6 carbon sugar), it generally exists as a 5-member hemiketal ring (a furanose). This structure is responsible for the long metabolic pathway and high reactivity compared to glucose (See below structure -note: hydrogens not shown)
Fructose is identified as a five-membered ring having six-carbon, a hexose, whereas glucose is a six-membered ring with a –OH group on the carbon at the 4 th position in a down projection. Molecular and Structure Formula of Fructose. Fructose is a levorotatory monosaccharide, which means it rotates the plane-polarised light in the left direction.
Fructose in comparison with glucose. Pyranose and furanose rings. Sucrose made from glucose and fructose.Watch the next lesson: https://www.khanacademy.org/s...
Fructose is more commonly found together with glucose and sucrose in honey and fruit juices. Fructose, along with glucose are the monosaccharides found in disaccharide, sucrose. Fructose is classified as a monosaccharide, the most important ketose sugar, a hexose, and is a reducing sugar.
Course: AP®︎/College Biology > Unit 1. Lesson 4: Properties, structure, and function of biological macromolecules. Molecular structure of DNA. Antiparallel structure of DNA strands. Molecular structure of RNA. Introduction to amino acids. Overview of protein structure. Introduction to carbohydrates. Carbohydrates.
You need to know the structure of the three main monosaccharides: glucose, fructose, and galactose. Learn to draw these in preparation of your exams. More importantly, you also need to know the isomers of glucose, alpha and beta glucose (note that the groups on the right are reversed).
