Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 6TYU
What is the difference between linking glucose molecules with α-1,4-glycosidic linkages versus β-1,4-glycosidic linkages? What are the consequences?
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What is the oligosaccharide-transferring moiety in N-link glycosylation?
An oligosaccharide is a repeating unit of a-D-galactopyranosyl-(a-1 >3)-allopyranoside. Each disaccharide unit is linked via B-1 --->4 glycosidic bond. The oligosaccharide has 10 monosaccharide residues.
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Is this oligosaccharide a good substrate for glycolysis? Why or why not? Provide two reasons and discuss corn prehensively.
Draw both possible disaccharides of D-psicose and D-mannose that are joined by an α(1→4) glycosidic linkage. Are either of them now a reducing sugar?
Chapter 5 Solutions
Biological Science (6th Edition)
Ch. 5 - 1. What are three ways monosaccharides differ from...Ch. 5 - Prob. 2TYKCh. 5 - Prob. 3TYKCh. 5 - 4. What are the primary functions of carbohydrates...Ch. 5 - Which of the differences listed here could be...Ch. 5 - What is the difference between linking glucose...Ch. 5 - Compare and contrast polysaccharides and nucleic...Ch. 5 - 8. Lysozyme, an enzyme found in human saliva,...Ch. 5 - SOCIETY Galactosemia is a potentially fatal...Ch. 5 - 10. If you hold a salty cracker in your mouth long...
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- More specifically, the component monosaccharides are (D-galactose, L-galactose), (D-glucose, L-glucose), (D-fructose, L-fructose)The galactose residue is linked to glucose via a/an (alpha linkage, beta linkage) and the glucose residue is linked to fructose via a/an (alpha linkage, beta linkage)arrow_forwardDraw the structure of a D-glucose molecule linked to threonine via a β-glycosidic linkage.arrow_forwardIn the structure in the picture, the monosaccharide units (alpha-D-galactopyranosyl and beta-D-allopyranose) are linked via alpha-1->3 glycosidic bond. Then, the formed disaccharide units are linked via beta-1->4 glycosidic bond. Then, an Oligosaccharide is formed which has 10 monosaccharide units, meaning that it contains 5 disaccharide units. Question: Is this oligosaccharide a good substrate for glycolysis? Provide two reasons for your answer.arrow_forward
- Which of an alpha-D-2,3-di-O-methylglucopyranose or alpha-D-2,3, 6-tri-O-methylglucopyranose represents a glucose unit in glycogen which was originally carrying an (alpha 1-->6) glycosidic bond?arrow_forwardAll sugar residues are in their D-isomeric forms. What kind of glycosidic linkage is between the first and second residues? What kind of glycosidic linkage is between the third and second residues?arrow_forwardDraw the (B1-->A1) linked dissacharide formed between the C3 epimer of B-D-glucose and the C2 epimer of a-D-galactose. Explain in 1-2 sentences why (or why not) a precipiate would be observed when mixing this dissacharide in an alkaline solution of copper.arrow_forward
- How many molecules of Glucose-1 - phosphate can be generated from this molecule?arrow_forward14C-Labeled glyceraldehyde 3-phosphate was added to a yeast extract. After a short time, fructose 1,6-bisphosphate labeled with 14C at C-3 andC-4 was isolated. What was the location of the 14C label in the starting glyceraldehyde 3- phosphate? Where did the second 14C label in fructose 1,6-bisphosphate come from? Explain.arrow_forwardName which, if any, of the following are epimers of d-glucose: Dmannose, D-galactose, D-ribose.arrow_forward
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