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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).
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.
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.
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)
By chemically joining a glucose molecule with a fructose molecule, a double sugar called sucrose is produced. This type of bond between monosaccharide units is called a glycosidic linkage. Use the paper models supplied in this lab to complete the following questions. • Cut out models of one glucose and one fructose molecule.
Another carbohydrate that is found in many fruits is the sugar known as fructose. If we look at the formula for fructose, we see that the value for n is also six (n = 6.)
These organic molecules are the building blocks of all living things, and are responsible for most of the structure and functions of the body, including energy storage, insulation, growth, repair, communication, and transfer of hereditary information.
