Biochemistry: Concepts and Connections (2nd Edition)
2nd Edition
ISBN: 9780134641621
Author: Dean R. Appling, Spencer J. Anthony-Cahill, Christopher K. Mathews
Publisher: PEARSON
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Textbook Question
Chapter 9, Problem 15P
Are mannose and galactose epimers? Allose and altrose? Gulose and talose? Ribose and arabinose? Consider only D-sugars. Explain your answers.
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Are mannose and galactose epimers? Allose and altrose? Gulose and talose?Ribose and arabinose? Consider only d-sugars. Explain your answers.
Mannose and galactose are they epimers? What is the difference between allose and altrose? What are gulose and talose?What is the difference between ribose and arabinose? Consider d-sugars alone. Justify your responses.
Which of the following pairs are epimers?
xylulose and ribulose
ribose and ribulose
xylulose and ribose
galactose and mannose
The correct answer is xylulose and ribulose. Please explain why and how to identify epimer pairs
Chapter 9 Solutions
Biochemistry: Concepts and Connections (2nd Edition)
Ch. 9 - Prob. 1PCh. 9 - -D-Galactopyranose rotates the plane of polarized...Ch. 9 - Provide an explanation for the fact that a-...Ch. 9 - Why is a type O individual considered a universal...Ch. 9 - The disaccharide , -trehalose differs from the ,...Ch. 9 - A reducing sugar will undergo the Fehling...Ch. 9 - Prob. 7PCh. 9 - Prob. 8PCh. 9 - Indicate whether the structures shown are R and S...Ch. 9 - Prob. 10P
Ch. 9 - Draw (using Haworth projections) the fragments of...Ch. 9 - One or more of the compounds shown below will...Ch. 9 - Why do you suppose that the influenza virus...Ch. 9 - Prob. 14PCh. 9 - Are mannose and galactose epimers? Allose and...Ch. 9 - Prob. 16PCh. 9 - Explain in about one sentence why it is important...Ch. 9 - Prob. 18PCh. 9 - Prob. 19PCh. 9 - Prob. 20PCh. 9 - Prob. 21PCh. 9 - Prob. 22PCh. 9 - Prob. 23P
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- Why is lactose a reducing sugar while sucrose is a non-reducing sugar? Explain clearly. Please support the answer with an illustration.arrow_forwardBased on the structure of sucrose below, is it classified as a reducing sugar? ОН 6CH OH 5 5 ОН 3 6CH OH a-Glucose 2 ОН 0. ОН HO 3 1 ОН ОН 2 CH₂OH 1 B-Fructose ОН CH₂OH ОН CH₂OH ОН OH НО a, B (1-2) linkage CH₂OH Sucrose + H2Oarrow_forwardWhat are the glycosidic linkages of the trisaccharide shown? α1→6, α1→6 α1→6, β1→6 α1→6, β1→5 α1→6, α1→5arrow_forward
- b-Galactosidase is an enzyme that hydrolyses only b(1,4)linkages of lactose. An unknown trisaccharide is convertedby b-galactosidase into maltose and galactose. Draw thestructure of the trisaccharidearrow_forwardReduction of D-fructose with a reducing agent yields a mixture of d-sorbitol along with a second, isomeric product. What is the structure of the second product?arrow_forwardWhy is sucrose a non-reducing sugar with Benedict’s solution while lactose is a reducing sugar under the same condition?arrow_forward
- What is mannose 6-phosphate & fructose 6-phosphate ?arrow_forwardОН НО НО- ОН HO НО- OH ОН OH OH НО What are the monosachharides that make up this trisaccharide? a-D-glucopyranose, a-D-galactopyranose, B-D-fructofuranose a-D-galactopyranose, a-D-glucopyranose, a-D-fructofuranose a-D-glucopyranose, a-D-glucopyranose, B-D-fructofuranose a-D-glucopyranose, a-D-galactopyranose, a-D-fructofuranosearrow_forwardwhat are the formal chemical names for sucrose,lactose and maltose? ex. celllubiose is B-D-Glucopyranosyl1-(1->4)-B-D-glucopyranose. how do you get the answer?arrow_forward
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