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S he structure of sucrose ( 7) (4 pol (table Sugar) lactulose is shown below. Decide for each of ...
12. Circle each anomeric carbon in the sugars below. (2 points) Which of the sugars below...
12. Circle each anomeric carbon in the sugars below. (2 points) Which of the sugars below is a reducing sugar? (1 point) Which sugar contains a glycosidic linkage? (1 point) CH-OH носно он н и носн,он они нон glucose fructose он Ин Н CH,он нон носно А он нон но/н,он и онон н sucrose 13. Extra credit: What type of enzyme catalyzes phosphate transfer? What type of enzyme usually catalyzes the rearrangement of a molecule? (2 points each)
18. Which of the following compound(s) would undergo mutarotation in aqueous solution? 19. Draw the chair...
18.
Which of the following compound(s) would undergo mutarotation in
aqueous solution?
19. Draw the chair conformation of a-D-galactopyranose.
20. Which of the following compound(s) is a glycoside?
21. Provide the reagents neccesary to carry out the following
conversion.
22. Predict the product(s) for the following reaction.
23. D-glucose & D-galactose are ______epimers of each
other.
24. Predict the product(s) for the following reaction.
25. Which of the following compound(s) would produce D-glucose
and D-mannose when treated with HCN followed...
1- Sucrose does not react with Fehling's reagent because A- Sucrose is not a reducing sugar....
1- Sucrose does not react with Fehling's reagent because A- Sucrose is not a reducing sugar. B) The anomeric carbon of glucose is involved in the glucose- fructose bond and hence is not free to form the aldehyde in solution. C) The monosaacharide constituents of sucrose no longer have an anomeric carbon with a free potential aldehyde or ketone group, and therefore no longer exhibits reducing properties. D) sucrose is a disaccharide of glucose and fructose in which the oxygen...
10. Consider the disaccharide below. a. Label any acetal and hemiacetal in the disaccharide. b. Number...
10. Consider the disaccharide below. a. Label any acetal and hemiacetal in the disaccharide. b. Number each monosaccharide ring. c. Classify the glycosidic linkage as a or B and use the numbers to designate its location. d. What monosaccharides form when the disaccharide is hydrolyzed? CH2OH - CH2OH Конвенон OH 9. Consider the following cyclic monosaccharide. a. Label the hemiacetal carbon. b. Label the monosaccharide as an aor B anomer. c. Draw the other anomer. d. Assume that this is...
The Haworth structure of sophorose, a carbohydrate found in beans, is shown below. (5 pts) a...
The Haworth structure of sophorose, a carbohydrate found in beans, is shown below. (5 pts) a Is this a mono-, di-, or polysaccharide? Sophorose Hb) What monosaccharide units are present in sophorose? OH H но он c) Draw an arrow to each anomeric carbon atom. d) What type of glycosidic linkage exists in this carbohydrate? e) Is this an α or β isomer? Choose one. OH H нон
41. The following sugar is also called frukt sugar A Glucose Maltese Lactose Section 11 Sucrose ) Fructose 42. The...
41. The following sugar is also called frukt sugar A Glucose Maltese Lactose Section 11 Sucrose ) Fructose 42. The following ugaris Afructose Sucrose caled blood sugar Lactose Glucose E) Matose 43. Alactone is a cyclic Calcohol Detone Section 111 44. Refer to the above ructures the enantiomer of Duco A) D-Fructo -Gluco C L-Glucose Dj L-Idee Section 111 D-Galactose 45. Refer to the above structures. The diastereoisomers of Glucose indude all of these, except AD Galactose Glucose -dose D-Fructose...
4. For each sugar below, characterize the anomer if a monosaccharide or the glycosidic bond(s) if...
4. For each sugar below, characterize the anomer if a monosaccharide or the glycosidic bond(s) if a di- or polysaccharide (e.g., B,B-2,3; if there is more than one glycosidic bond, draw an arrow from each label to its corresponding bond). CH,OH CH2OH CH OН но н H Н H Он Н OH н OH Он Н ОН O H Но он b. a. OH H OH CH-OH O H Но ОН Н CH2OH CH2 CH2OH он OCH CH3 Но н...
hehe instructions: You may work on this individually or in groups. Remember you will each be...
hehe instructions: You may work on this individually or in groups. Remember you will each be responsible for knowing the material individually on exam. Please write answers on separate sheet where appropriate. This will be turned at end of class Thursday Oct. 31. credit will be based on combination of participation and attendance. You may pick up your copy of answers outside my office Friday morning and/or view key after class on Blackboard. These are good study questions for your...
Page Chemistry 107 Midterm II Review Problems Draw a Lewis structure for CaHN (think over the...
Page Chemistry 107 Midterm II Review Problems Draw a Lewis structure for CaHN (think over the bonding preferences of each atom when you lay out the skeleton of this molecule!) 1. CC Determine the geometry at each "central atom" (a) Does this molecule have any polar bonds? Is the entire molecule polar? (b) What will be the dominant intermolecular force in a sample of this compound? (c) (c) If you had 100.0 g of this compound, how many moles would...
12. Circle each anomeric carbon in the sugars below. (2 points) Which of the sugars below is a reducing sugar? (1 point) Which sugar contains a glycosidic linkage? (1 point) CH-OH носно он н и носн,он они нон glucose fructose он Ин Н CH,он нон носно А он нон но/н,он и онон н sucrose 13. Extra credit: What type of enzyme catalyzes phosphate transfer? What type of enzyme usually catalyzes the rearrangement of a molecule? (2 points each)
18.
Which of the following compound(s) would undergo mutarotation in
aqueous solution?
19. Draw the chair conformation of a-D-galactopyranose.
20. Which of the following compound(s) is a glycoside?
21. Provide the reagents neccesary to carry out the following
conversion.
22. Predict the product(s) for the following reaction.
23. D-glucose & D-galactose are ______epimers of each
other.
24. Predict the product(s) for the following reaction.
25. Which of the following compound(s) would produce D-glucose
and D-mannose when treated with HCN followed...
10. Consider the disaccharide below. a. Label any acetal and hemiacetal in the disaccharide. b. Number each monosaccharide ring. c. Classify the glycosidic linkage as a or B and use the numbers to designate its location. d. What monosaccharides form when the disaccharide is hydrolyzed? CH2OH - CH2OH Конвенон OH 9. Consider the following cyclic monosaccharide. a. Label the hemiacetal carbon. b. Label the monosaccharide as an aor B anomer. c. Draw the other anomer. d. Assume that this is...
The Haworth structure of sophorose, a carbohydrate found in beans, is shown below. (5 pts) a Is this a mono-, di-, or polysaccharide? Sophorose Hb) What monosaccharide units are present in sophorose? OH H но он c) Draw an arrow to each anomeric carbon atom. d) What type of glycosidic linkage exists in this carbohydrate? e) Is this an α or β isomer? Choose one. OH H нон
41. The following sugar is also called frukt sugar A Glucose Maltese Lactose Section 11 Sucrose ) Fructose 42. The following ugaris Afructose Sucrose caled blood sugar Lactose Glucose E) Matose 43. Alactone is a cyclic Calcohol Detone Section 111 44. Refer to the above ructures the enantiomer of Duco A) D-Fructo -Gluco C L-Glucose Dj L-Idee Section 111 D-Galactose 45. Refer to the above structures. The diastereoisomers of Glucose indude all of these, except AD Galactose Glucose -dose D-Fructose...
4. For each sugar below, characterize the anomer if a monosaccharide or the glycosidic bond(s) if a di- or polysaccharide (e.g., B,B-2,3; if there is more than one glycosidic bond, draw an arrow from each label to its corresponding bond). CH,OH CH2OH CH OН но н H Н H Он Н OH н OH Он Н ОН O H Но он b. a. OH H OH CH-OH O H Но ОН Н CH2OH CH2 CH2OH он OCH CH3 Но н...
hehe instructions: You may work on this individually or in groups. Remember you will each be responsible for knowing the material individually on exam. Please write answers on separate sheet where appropriate. This will be turned at end of class Thursday Oct. 31. credit will be based on combination of participation and attendance. You may pick up your copy of answers outside my office Friday morning and/or view key after class on Blackboard. These are good study questions for your...
Page Chemistry 107 Midterm II Review Problems Draw a Lewis structure for CaHN (think over the bonding preferences of each atom when you lay out the skeleton of this molecule!) 1. CC Determine the geometry at each "central atom" (a) Does this molecule have any polar bonds? Is the entire molecule polar? (b) What will be the dominant intermolecular force in a sample of this compound? (c) (c) If you had 100.0 g of this compound, how many moles would...
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