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Draw the ringed (Haworth) structure of a-D-glucose below with
proper numbering of carbons and all hydrogen...
Draw a beta-hemiacetal form of the sugar shown below, numbering all the carbons and circling the...
Draw a beta-hemiacetal form of the sugar shown below, numbering all the carbons and circling the location of the original aldehyde oxygen:
CARBOHYDRATES POST-LAB QUESTIONS CONT'D 23.Draw the Haworth structure of lactose and explain why this disaccharide gives...
CARBOHYDRATES POST-LAB QUESTIONS CONT'D 23.Draw the Haworth structure of lactose and explain why this disaccharide gives a positive Benedict's test; make sure to circle the part of the structure that is responsible for the reaction with Benedict's reagent. [5pts) Haworth Projection: (2.5 points) Hemiacetal circled / indicated (2.5 points) CARBOHYDRATES POST-LAB QUESTIONS CONT'D 24. When Benedict's reagent reacts with a reducing sugar, it oxidizes the aldehyde functional group to a carboxylic acid. As seen in the figure below: only a...
3) (6 pts) Draw a line structure of an organic molecule that contains exactly 12 carbons,...
3) (6 pts) Draw a line structure of an organic molecule that contains exactly 12 carbons, five-membered ring an nitrogen atom, an ester group and a secondary alcohol group. Number all carbon atoms. Place an asterisk (*) next to any chiral carbons that may exist in the structure and state how many stereoisomers are possible for the molecule. # of chiral carbons: # of possible stereoisomers: 4) (6 pts) Draw a line structure of an organic molecule that contains 12...
6 Which of the carbons in the structure shown above are tertiary carbons? (mark all correct...
6 Which of the carbons in the structure shown above are tertiary carbons? (mark all correct responses) Choose all that apply al b) c) d) 15 Ia saturated open chain alkthalide has 15 carbon atoms, 4 chlorine atoms, and 1 bromine atom, how many hydrogen atoms are present? 7 What is the proper IUPAC name for the structure shown below? Use proper IUPAC Syntax with dashes between number and letters) and commas between numbers) as shown in the Tutorial. There...
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
Question 4: The Haworth projections of the furanose and pyranose forms of D-glucose are shown below:...
Question 4: The Haworth projections of the
furanose and pyranose forms of D-glucose are shown below:
a)
Make models of each and determine which is the most stable and what
types of strain are involved to make other forms less favored. Draw
these models.
b)
Can you see how the lone pairs of the hemi-acetal ring oxygen are
positioned to interact with the anti-bonding orbital of the
sp3 hybrid of the other C-O of the hemi-acetal (i.e. the
new OH...
Which of the line angle diagrams are somers Choose all that col What is the proper...
Which of the line angle diagrams are somers Choose all that col What is the proper IUPAC name for the structure shown below? zece Which of the following bonding patterns for carbon and hydrogen are not allowed? (mark all correct responses) HH I IA Choose all that apply. b) c) d) KODDO 8 Which of the carbons in the structure shown above are secondary carbons? (mark all correct responses) Which of the following respresent different conformations of n-hexane? ( mark...
142 Problems and questions 1. Are all carbohydrates soluble in water? Explain. 2. Draw the Fischer...
142 Problems and questions 1. Are all carbohydrates soluble in water? Explain. 2. Draw the Fischer projection of an aldopentose. 3. The Haworth structure of D-talose is shown below. CH OH OH - 0, OH КОН ОН a) Is talose a monosaccharide, disaccharide, or polysaccharide? b) Does the above structure represent -D-talose or B-D-talose? 4. Compare amylose and cellulose. Describe one similarity and one difference 5. Which monosaccharide is the product of the complete hydrolysis of glycogen?
5. D-sorbital is found in 'sugar-free' chewing gum. It is formed by reducing D-glucose with NaBH Draw the structure of D-sorbital. s. (4 pts) Classify the following amino acid as polar, n...
5. D-sorbital is found in 'sugar-free' chewing gum. It is formed by reducing D-glucose with NaBH Draw the structure of D-sorbital. s. (4 pts) Classify the following amino acid as polar, non- polar, acidic, or basic: 6 (4 pts) The amino acid threonine (thr) has two chiral carbons. Draw a Fischer projection of the 2S,3S configuration of threonine. キ 7.(11 pts) Draw the tripeptide lys-asp-ser at physiological pH 8. (8 pts) The pK, values for aspartic acid are 2.10, 9.82...
please answer all parts. your the best :) 4. For each compound below, draw the most...
please answer all parts. your the best :)
4. For each compound below, draw the most stable chair conformation. Do no draw in the hydrogen atoms. For clarity, circle all non-hydrogen substituents that are in an axial position. It may help to number the carbons in each chair first before drawing in cach substituent. (3pts for each correct conformation properly drawn) 5. (a) Convert Compound A (shown below) to its chair-like structure by placing the substituents of this compound in...
CARBOHYDRATES POST-LAB QUESTIONS CONT'D 23.Draw the Haworth structure of lactose and explain why this disaccharide gives a positive Benedict's test; make sure to circle the part of the structure that is responsible for the reaction with Benedict's reagent. [5pts) Haworth Projection: (2.5 points) Hemiacetal circled / indicated (2.5 points) CARBOHYDRATES POST-LAB QUESTIONS CONT'D 24. When Benedict's reagent reacts with a reducing sugar, it oxidizes the aldehyde functional group to a carboxylic acid. As seen in the figure below: only a...
3) (6 pts) Draw a line structure of an organic molecule that contains exactly 12 carbons, five-membered ring an nitrogen atom, an ester group and a secondary alcohol group. Number all carbon atoms. Place an asterisk (*) next to any chiral carbons that may exist in the structure and state how many stereoisomers are possible for the molecule. # of chiral carbons: # of possible stereoisomers: 4) (6 pts) Draw a line structure of an organic molecule that contains 12...
6 Which of the carbons in the structure shown above are tertiary carbons? (mark all correct responses) Choose all that apply al b) c) d) 15 Ia saturated open chain alkthalide has 15 carbon atoms, 4 chlorine atoms, and 1 bromine atom, how many hydrogen atoms are present? 7 What is the proper IUPAC name for the structure shown below? Use proper IUPAC Syntax with dashes between number and letters) and commas between numbers) as shown in the Tutorial. There...
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
Question 4: The Haworth projections of the
furanose and pyranose forms of D-glucose are shown below:
a)
Make models of each and determine which is the most stable and what
types of strain are involved to make other forms less favored. Draw
these models.
b)
Can you see how the lone pairs of the hemi-acetal ring oxygen are
positioned to interact with the anti-bonding orbital of the
sp3 hybrid of the other C-O of the hemi-acetal (i.e. the
new OH...
Which of the line angle diagrams are somers Choose all that col What is the proper IUPAC name for the structure shown below? zece Which of the following bonding patterns for carbon and hydrogen are not allowed? (mark all correct responses) HH I IA Choose all that apply. b) c) d) KODDO 8 Which of the carbons in the structure shown above are secondary carbons? (mark all correct responses) Which of the following respresent different conformations of n-hexane? ( mark...
142 Problems and questions 1. Are all carbohydrates soluble in water? Explain. 2. Draw the Fischer projection of an aldopentose. 3. The Haworth structure of D-talose is shown below. CH OH OH - 0, OH КОН ОН a) Is talose a monosaccharide, disaccharide, or polysaccharide? b) Does the above structure represent -D-talose or B-D-talose? 4. Compare amylose and cellulose. Describe one similarity and one difference 5. Which monosaccharide is the product of the complete hydrolysis of glycogen?
5. D-sorbital is found in 'sugar-free' chewing gum. It is formed by reducing D-glucose with NaBH Draw the structure of D-sorbital. s. (4 pts) Classify the following amino acid as polar, non- polar, acidic, or basic: 6 (4 pts) The amino acid threonine (thr) has two chiral carbons. Draw a Fischer projection of the 2S,3S configuration of threonine. キ 7.(11 pts) Draw the tripeptide lys-asp-ser at physiological pH 8. (8 pts) The pK, values for aspartic acid are 2.10, 9.82...
please answer all parts. your the best :)
4. For each compound below, draw the most stable chair conformation. Do no draw in the hydrogen atoms. For clarity, circle all non-hydrogen substituents that are in an axial position. It may help to number the carbons in each chair first before drawing in cach substituent. (3pts for each correct conformation properly drawn) 5. (a) Convert Compound A (shown below) to its chair-like structure by placing the substituents of this compound in...
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