Concept explainers
Interpretation:
The cellulose, amylose, amylopectin and glycogen have to be tabulated on the basis of their
Concept introduction:
The linkage between monosaccharides in a polysaccharide is referred to as a glycosidic linkage.
Cellulose is composed of glucose molecules linked by
Amylose is composed of glucose molecules linked by
Amylopectin is composed of glucose molecules linked by
Glycogen is composed of glucose molecules linked by
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Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
- a. Is the disaccharide below a non-reducing sugar? yes or no b. The glycosidic linkage in the disaccharide is what β-(1-2) linkage, α-(1-2) linkage, β-(1-4) linkage, or α-(1-4) linkage? c. The products of hydrolysis of the disaccharide (which of the ff.) α-galactose and α-ribose α-glucose and α-fructose α-fructose and α-galactose α-glucose and α-galactosearrow_forwardMatch the following structural composition with the corresponding polysaccharide Linear homoglycan of glucose connected by α1-4 linkages Branched glycan formed by alternating units of D-galactose and L-galactose Linear sulfated chains of alternating β-D-galactopyranose and 3,6-anhydro- α-galactopyranosyl units Poly-β-Dmannopyranosyluronic acid and/or Poly-α-L-gulopyranosyluronic acid Repeating Poly-D-galacturonic acid residues…arrow_forwardIn the formula for sucrose (structure shown above), the bottom ring is pyranose. True or False?arrow_forward
- Imagine a trisaccharide that has D-Altrose, D-Gulose, and D-Ribose. D-Altrose is bonded to D-Gulose in an α(1→4) glycosidic bond and D-Ribose is bonded to D-Altrose in an α(1→6) glycosidic bond. Draw the imaginary trisaccharide using Haworth projection with the appropriate representation of each monosaccharide.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_forwardDraw the structure of a disaccharide unit in a polysaccharide composed of D-glucose linked to α(1,4) to D-galactosamine.arrow_forward
- Given the monosaccharide: what is its main functional group (aldose or ketose?)Is it triose, hexose, pentose or tetrose?is it D or L configuration?arrow_forwardSuppose a polymer of glucose with alternating α(1-->4) and β(1-->4) glycosidic linkages has just been discovered. Draw a Haworth projection for a repeating tetramer (ie, two repeating dimers) of such a polysaccharide. What organism might use this as a food source?arrow_forwardA student decided that the configuration of the asymmetric centers in a sugar such as d-glucose could be determined rapidly by simply assigning the Rconfiguration to an asymmetric center with an OH group on the right and the S configuration to an asymmetric center with an OH group on the left. Ishe correct? (We will see in Chapter 20 that the “d” in d-glucose means that the OH group on the bottommost asymmetric center is on the right.)arrow_forward
- Complete the following table by providing the Fischer and Haworth Projections of the given sugars. In the Fischer Projection put an asterisk (*) mark in the chiral centers of the molecule. Sugar Fischer Projection Haworth Projection (Complete) alpha-anomer Haworth Projection (Abbreviated) beta-anomer L-Galactose L-Fructose D- Xylosearrow_forwardName the three digestible disaccharides we talked about. What monosaccharides are they each made of and tell whether they are connected by an alpha 1-4 glycosidic linkage, a 1-4 beta glycosidic linkage or a 1-5 beta glycosidic linkage.arrow_forwardConstruct the two enantiomeric forms/structure of the following monosaccharides and designate the handedness of each using D, L system: a. Ribulosearrow_forward
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