How are glycosidic linkages formed
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1. How are glycosidic linkages formed?
2. Differentiate the glycosidic linkages below:
a. between glucose and fructose in sucrose
b. Glucose units in amylose, amylopectin, glycogen, starch
c. Between starch and cellulose
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- Differentiate the glycosidic linkages 1. Between glucose and fructose in sucrose 2. Glucose units in amylose, amylopectin, glycogen, and starch. 3. Between starch and cellulose8) Consider the tetrasaccharide stachyose drawn below. Stachyose is found in white jasmine, soybeans, and lentils. Because humans cannot digest it, its consumption causes flatulence. HO How ОН OH stachyose OH HO HO OH HO OH OH OH OH «ОН a. Label all glycoside bonds. b. Classify each glycosidic linkage as a or ẞ and use numbers to designate its location between two rings (e.g., 1-4-3). c. What products are formed when stachyose is hydrolyzed with H,O"? d. Is stachyose a reducing sugar? e. What product is formed when stachyose is treated with excess CHI, Ag₂O? f. What products are formed when the product in (e) is treated with H₂O"?1. This cell is dependent solely on glucose as an energy source a.Muscle cells b.Kidney cells c.Liver cells d.Brain cells 2. The monosaccharide of amylase in starch is a.Fructose b.Maltose c.Glucose d.Dextrose 3. The following bond can be found in sucrose a.Alpha-1,2-glycoside bond b.Beta-1,4-glycoside bondc.Alpha-1,4-glycoside bond d.Alpha-1,6-glycoside bond 4. Glucose is transported by facilitated diffusion in brain via a.GLUT-1 transporter b.GLUT-2 transporterc. GLUT-3 transporter d. GLUT-4 transporter
- Listed below are descriptions that may belong to amylose, amylopectin, both, or it may not belong to either. Write A if it describes amylose, B if it describes amylopectin, AB if the statement applies to both, or O if it doesn’t apply to either. 1. Its monosaccharides are bound by at least one α-1,4-glycosidic bond. 2. It contains α-1,6-glycosidic bonds. 3. It can be broken down by the enzyme α-amylase. 4. A polysaccharide made up of gulose. 5. It can form a double helix.1. Draw the structure of triglyceride containing the fatty acids palmitic, oleic, and linoleic. How many Hydrogen atoms are needed in the its catalytic hydrogenation? 2. Draw the structure of Phosphatidylserine that contains oleic and arachidonic acid. What role does it play in the cell?Starch consists ofSelect one: a.Unbranched amylose and unbranched amylopectin b.Branched amylose and branched amylopectin c.Branched amylose and unbranched amylopectin d.Unbranched amylose and branched amylopectin
- In lactose monosaccharides are linked by Select one: a. 1-4 glycosidic bond O b. 1-2 glycosidic bond c. 1--6 glycosidic bond d. None of the abovePage 3 of 6 Previous Next For items 16-20, determine the monosaccharide units for each carbohydrate. Choic are: A. B-D-galactopyranose, and D-glucopyranose B. a-D-glucopyranose and D-glucopyranose C. N-acetyl-galactosamine D. B-D-glucuronate-2-sulfate, E. N-acetyl-B-D-glucosamine, and D-glucuronate 16. Maltose 17. Lactose and N-sulfo-D-glucosamine-6-sulfate 18. A-antigen oligosaccharide (end unit) 19. Heparin 20. Hyaluronic acid 34420. What is the structural difference of cellulose and amylose?A. Amylose is a polymer of glucose while cellulose is a polymer of fructose.B. Glucose moieties in amylose allows intermolecular hydrogen bonding.C. The glycosidic bond in cellulose is α-(1 →4), while in amylose, it is β-(1 → 4).D. Cellulose has weaker intramolecular forces of interaction than amylose21. You have watched a video about polarimetry. Based on what you learned, apply them to answer this question.“A solution contains equimolar amount of D-glucose and L-glucose, what will happen to the optical activity of thesolution?”A. DextrorotationB. LevorotationC. MutatorotationD. No optical activity
- (a) What is the amount of cellulose in plant cell? Describe the molec- ular structure of cellulose. (b) Describe the conversion of cellulose to carbon materials.1. What is the physiological significance of branching in polysaccharides? 2. Discuss briefly the cause of lactose intolerance. 3. Why humans do not have the capacity to digest cellobiose or cellulose? 4. What is the difference between a carbohydrate and sugar?Explain the principle behind the Anthrone test and Molisch Test. Structurally, how one will differentiate starch from glycogen? How are glycosidic linkages formed? What are the differences between the glycosidic linkages below?a. Glucose and fructose in sucroseb. Glucose units in amylose, amylopectin, glycogen, starchc. Between starch and cellulose