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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...
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...
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...
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...
Draw all the stereoisomers (redraw the first with the proper 3-D representation) of the compounds below....
Draw all the stereoisomers (redraw the first with the proper 3-D
representation) of the compounds below. The configuration for the
first isomer you should draw is provided. Assign R or S
configuration to each chirality center in the additional isomers.
Indicate the stereochemical relationship (diastereomers,
enantiomers, meso compounds) between the first isomer and each of
the others. The configuration for the Fischer Projection has been
omitted, since stereochemistry can be determined from a 2-D
structure. You do not need to...
3/4 d) Draw the structure of the MINOR product below. No mechanism needed here. (2 pts)...
3/4 d) Draw the structure of the MINOR product below. No mechanism needed here. (2 pts) 7) Draw the mechanism of the elimination reaction below (6 pts) EN (1 pt) b) What is the name of the specific mechanism of the reaction? c) What is being eliminated in the reaction? (2 pts) 8) A molecule in the conformation shown below undergoes the same type of elimination reaction as the previous problem. Draw the product of the reaction in full line...
4. (24pts) Consider the structure below then answers part (a)-(d) in the space below. (Point total...
4. (24pts) Consider the structure below then answers part (a)-(d) in the space below. (Point total for this question is max one can earn if all answers or responses below are complete and valid.) Br Y Br OH 0 (a) How many stereoisomers are possible for this compound? Show how this can be easily determined mathematically. (b) Draw all stereoisomers possible for this compound. Use dashes and wedges appropriately at each stereocenter. Do not show the hydrogen atoms at each...
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...
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...
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...
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...
Draw all the stereoisomers (redraw the first with the proper 3-D
representation) of the compounds below. The configuration for the
first isomer you should draw is provided. Assign R or S
configuration to each chirality center in the additional isomers.
Indicate the stereochemical relationship (diastereomers,
enantiomers, meso compounds) between the first isomer and each of
the others. The configuration for the Fischer Projection has been
omitted, since stereochemistry can be determined from a 2-D
structure. You do not need to...
3/4 d) Draw the structure of the MINOR product below. No mechanism needed here. (2 pts) 7) Draw the mechanism of the elimination reaction below (6 pts) EN (1 pt) b) What is the name of the specific mechanism of the reaction? c) What is being eliminated in the reaction? (2 pts) 8) A molecule in the conformation shown below undergoes the same type of elimination reaction as the previous problem. Draw the product of the reaction in full line...
4. (24pts) Consider the structure below then answers part (a)-(d) in the space below. (Point total for this question is max one can earn if all answers or responses below are complete and valid.) Br Y Br OH 0 (a) How many stereoisomers are possible for this compound? Show how this can be easily determined mathematically. (b) Draw all stereoisomers possible for this compound. Use dashes and wedges appropriately at each stereocenter. Do not show the hydrogen atoms at each...
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