26) A) Draw the Haworth projection for the following disaccharide below. B) Identify the glucose and galactose monosaccharides within this sugar. C) Is this a reducing sugar? Explain your answer. D) Circle the glycosidic bond and indicate whether it is an alpha or a beta glycosidic bond E) Is this alpha-disaccharide or a beta-disaccharide? 7. The structure of a disaccharide is shown below. Which statement applies? (2 points) A) Both rings A and B are in equilibrium with an open chain form. B) Only ring A is in equilibrium with an open chain form. C) Only ring B is in equilibrium with an open chain form. D) Neither ring is in equilibrium with an open chain form. 8. The form of fructose found in the disaccharide sucrose is which of the following? (2 points) A) a 5-membered cyclic hemiacetal B) a 5-membered cyclic hemiketal C) a 6-membered cyclic hemiacetal D) a 6-membered cyclic hemiketal. 9. D-glucose and D-galactose differ in their stereochemistry at which carbon? (2 points) A) C1 B) C2 C) C3 D) C4 E) C5 F) C6
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Glucose and galactose are both hexoses, meaning they have six carbons. They differ in the configuration at the C4 carbon. In glucose, the hydroxyl group at C4 is in the equatorial position, while in galactose, it is in the axial position. Show more…
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Part 1 Show the complete steps and products of the Haworth Projection structure of the following saccharides. The males have to answer the structure of D-fructose and the females are the structure of D-galactose. Expanded structure of the given molecule Fischer Projection Haworth's structure [show the complete steps] Step 1 Step 2 Step 3 Part 2 Show the synthesis of disaccharide lactose. Give the expanded structure of the reactants. Give the expanded structure of the products. Part 3. Show the chemical reaction of D-ribose. Name the chemical reaction. Show here the chemical equation and name the products. Use the expanded structure. 1. 2. 3.
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