9) Which of the following represents a pair of epimers? A) D- and L-erythrose B) D-erythrose...
9) Which of the following represents a pair of epimers?
A) D- and L-erythrose B) D-erythrose and D-threose C) D-arabinose and D-erythrose
D) D-arabinose and D-xylose E) D-glyceraldehyde and D-threose
Homework Answers
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9) Which of the following represents a pair of epimers?
A) D- and
L-erythrose
B) D-erythrose...
What is the identify of compound A and B? D-allose L-allose D-altrose L-altrose D-arabinose L-arabinose D-erythrose...
What is the identify of compound A and B?
D-allose
L-allose
D-altrose
L-altrose
D-arabinose
L-arabinose
D-erythrose
L-erythrose
D-erythrulose
L-erythrulose
D-fructose
L-fructose
D-galactose
L-galactose
D-glucose
L-glucose
D-glyceraldehyde
L-glyceraldehyde
D-gulose
L-gulose
D-idose
L-idose
D‐lyxose
L‐lyxose
D-mannose
L-mannose
D‐psicose
L‐psicose
D-ribose
L-ribose
D-ribulose
L-ribulose
D-sorbose
L-sorbose
D-tagatose
L-tagatose
D-talose
L-talose
D-threose
L-threose
D‐xylose
L‐xylose
D-xylulose
L-xylulose
None of the above
What is the identify of compound A? CH2OH HO OH OH OH Compound A
3. Which of the following pairs of sugars are epimers of each other? a. D-sorbose and...
3. Which of the following pairs of sugars are epimers of each other? a. D-sorbose and D-psicose b. D-sorbose and D-fructose c. D-erythrose and D-arabinose 4. Which of the following pairs of sugars are epimers of each other? a. D-fructose and L-fructose b. D-arabinose and D-ribose c. D-ribose and D-ribulose
Question1 a) What are carbohydrates? b) What is the origin of the name carbohydrate? c) Explain...
Question1 a) What are carbohydrates? b) What is the origin of the name carbohydrate? c) Explain why the empirical formulae of monosaccharides do not define monosaccharides. d) Explain the basis for the existence of so many types of monosaccharides in nature e) Write 3 other names for carbohydrates. Question 2 a) Draw the structures of the monosaccharides listed below. i. D-erythrose ii. L-threose ii. D-threose b) Question 3 a) Discuss the stereoisomeric relationships between D-erythrose, D-threose and L-threose Draw the...
D-ribose and L-arabinose are epimers. True False
D-ribose and L-arabinose are epimers. True False
1) SHOW WORK STEP By STEP below is Figure 7-3 Recognizing Epimers Using Figure 7-3, identify the epimers of (a) D-...
1) SHOW WORK STEP By STEP
below is Figure 7-3
Recognizing Epimers Using Figure 7-3, identify the epimers of (a) D-allose, (b) D-gulose, and (c) D-ribose at C-2, C-3, and C-4. Answer Epimers differ by the configuration about only one carbon. (a) D-altrose (C-2), D-glucose (C-3), D-gulose (C-4) (b) D-idose (C-2), D-galactose (C-3), D-allose (C-4) (c) D-arabinose (C-2), D-xylose (C-3) (a) D-Aldoses Three carbons Four carbons Five carbons но не HO -OH н-с-он CH, OH D-Glyceraldehyde но-с-н H-C-OH снион D-Threose...
CH401 Biochemistry I Homework Assignment #6, Carbohydrates 1. Indicate whether each of the following pairs of...
CH401 Biochemistry I Homework Assignment #6, Carbohydrates 1. Indicate whether each of the following pairs of sugars consists of anomers, epimers, enantiomers, or none of these relationships. a. D-glyceraldehyde and dihydroxyacetone. annos b. D-glucose and D-mannose - epimers c. D-erythrose and L-erythrose er m ers d. a-D-glucose and B-D-glucose - enoshowers e. D-ribose and D-arabinose - f. D-galactose and D-glucose - 2. What does the enzyme mutarotase catalyze? Show by an equation using the glucose isomers. 3. Draw the Haworth...
What is the major product of the following reaction? B-aldopentafuranose with 1. Br2/H2O 2. H2O2...
What is the major product of the following reaction? B-aldopentafuranose with 1. Br2/H2O 2. H2O2/Fe(SO4)3 - D-erythrose - D-arabinose - L-ribose - D-ribulose - L-threose Please show mechanism and choose one of the answer choices listed
Define the stereochemical relationships between each sugar as specifically as possible. Choose from the following: enantiomers, diastereomers but not epimers, and epimers.
Define the stereochemical relationships between each sugar as specifically as possible. Choose from the following: enantiomers, diastereomers but not epimers, and epimers.Also label as D- ___ or L- ___. (Example: D-xylose).14 (1).pdf
Que. 9) What is the major organic product obtained from the following reaction? H2SO4 o OH...
Que. 9) What is the major organic product obtained from the following reaction? H2SO4 o OH OH OH c. 3 d. 4 Que. 10) What is the relationship between D-erythrose and D-threose? CHO CHO HOH HOH H OH OH CHOH CH,OH D-Erythrose D-Threose a. constitutional isomers b. enantiomers c. diastereomers d. tautomers Que. 11) What is the relationship between D-ribose and D-xylose? CHO CHO І н он н -он нон нон н -он н -он І І CH OH Сн,он...
1. Which of the following is an aldohexose? 2. Which of the following is a cetopentose? 3. Which of the following best d...
1.
Which of the following is an aldohexose?
2. Which of the following is a cetopentose?
3. Which of the following best describes the relationship
between D-glucose and D-fructose?
4. Which of the following is (are) L-alfohexose(s)?
5. Which of the following aldohexose(s) is (are)
dextrorotatory?
6. How many stereoisomers are possible for L-galactose? Draw
or look for its structure.
7. Which of the following conpounds is a pair of
enantiomers?
8. Draw the fisher projection for L-sedoheptulose and also...
What is the identify of compound A and B?
D-allose
L-allose
D-altrose
L-altrose
D-arabinose
L-arabinose
D-erythrose
L-erythrose
D-erythrulose
L-erythrulose
D-fructose
L-fructose
D-galactose
L-galactose
D-glucose
L-glucose
D-glyceraldehyde
L-glyceraldehyde
D-gulose
L-gulose
D-idose
L-idose
D‐lyxose
L‐lyxose
D-mannose
L-mannose
D‐psicose
L‐psicose
D-ribose
L-ribose
D-ribulose
L-ribulose
D-sorbose
L-sorbose
D-tagatose
L-tagatose
D-talose
L-talose
D-threose
L-threose
D‐xylose
L‐xylose
D-xylulose
L-xylulose
None of the above
What is the identify of compound A? CH2OH HO OH OH OH Compound A
3. Which of the following pairs of sugars are epimers of each other? a. D-sorbose and D-psicose b. D-sorbose and D-fructose c. D-erythrose and D-arabinose 4. Which of the following pairs of sugars are epimers of each other? a. D-fructose and L-fructose b. D-arabinose and D-ribose c. D-ribose and D-ribulose
Question1 a) What are carbohydrates? b) What is the origin of the name carbohydrate? c) Explain why the empirical formulae of monosaccharides do not define monosaccharides. d) Explain the basis for the existence of so many types of monosaccharides in nature e) Write 3 other names for carbohydrates. Question 2 a) Draw the structures of the monosaccharides listed below. i. D-erythrose ii. L-threose ii. D-threose b) Question 3 a) Discuss the stereoisomeric relationships between D-erythrose, D-threose and L-threose Draw the...
D-ribose and L-arabinose are epimers. True False
1) SHOW WORK STEP By STEP
below is Figure 7-3
Recognizing Epimers Using Figure 7-3, identify the epimers of (a) D-allose, (b) D-gulose, and (c) D-ribose at C-2, C-3, and C-4. Answer Epimers differ by the configuration about only one carbon. (a) D-altrose (C-2), D-glucose (C-3), D-gulose (C-4) (b) D-idose (C-2), D-galactose (C-3), D-allose (C-4) (c) D-arabinose (C-2), D-xylose (C-3) (a) D-Aldoses Three carbons Four carbons Five carbons но не HO -OH н-с-он CH, OH D-Glyceraldehyde но-с-н H-C-OH снион D-Threose...
CH401 Biochemistry I Homework Assignment #6, Carbohydrates 1. Indicate whether each of the following pairs of sugars consists of anomers, epimers, enantiomers, or none of these relationships. a. D-glyceraldehyde and dihydroxyacetone. annos b. D-glucose and D-mannose - epimers c. D-erythrose and L-erythrose er m ers d. a-D-glucose and B-D-glucose - enoshowers e. D-ribose and D-arabinose - f. D-galactose and D-glucose - 2. What does the enzyme mutarotase catalyze? Show by an equation using the glucose isomers. 3. Draw the Haworth...
Que. 9) What is the major organic product obtained from the following reaction? H2SO4 o OH OH OH c. 3 d. 4 Que. 10) What is the relationship between D-erythrose and D-threose? CHO CHO HOH HOH H OH OH CHOH CH,OH D-Erythrose D-Threose a. constitutional isomers b. enantiomers c. diastereomers d. tautomers Que. 11) What is the relationship between D-ribose and D-xylose? CHO CHO І н он н -он нон нон н -он н -он І І CH OH Сн,он...
1.
Which of the following is an aldohexose?
2. Which of the following is a cetopentose?
3. Which of the following best describes the relationship
between D-glucose and D-fructose?
4. Which of the following is (are) L-alfohexose(s)?
5. Which of the following aldohexose(s) is (are)
dextrorotatory?
6. How many stereoisomers are possible for L-galactose? Draw
or look for its structure.
7. Which of the following conpounds is a pair of
enantiomers?
8. Draw the fisher projection for L-sedoheptulose and also...
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