Podcast
Questions and Answers
What is the orientation of the bulky R group in a Haworth projection when the OH group engaged in a nucleophilic attack is on the right-hand side in the straight chain Fisher diagram?
What is the orientation of the bulky R group in a Haworth projection when the OH group engaged in a nucleophilic attack is on the right-hand side in the straight chain Fisher diagram?
- Parallel to the ring
- Perpendicular to the ring
- Pointed up (correct)
- Pointed down
What is the simplest rule for determining the orientation of OH groups in a Haworth projection?
What is the simplest rule for determining the orientation of OH groups in a Haworth projection?
- If they are pointing up in the Fisher straight chain form, they point up in the Haworth form
- If they are pointing to the left in the Fisher straight chain form, they point up in the Haworth form
- If they are pointing down in the Fisher straight chain form, they point down in the Haworth form
- If they are pointing to the right in the Fisher straight chain form, they point down in the Haworth form (correct)
What is the relationship between D-glyceraldehyde and D sugars?
What is the relationship between D-glyceraldehyde and D sugars?
- D sugars are unrelated to D-glyceraldehyde
- D sugars are diastereomers of D-glyceraldehyde
- D sugars are related to D-glyceraldehyde at their last asymmetric center (correct)
- D sugars are enantiomers of D-glyceraldehyde
What is the prefix 'L' referring to in a sugar molecule?
What is the prefix 'L' referring to in a sugar molecule?
What is the purpose of the Haworth projection?
What is the purpose of the Haworth projection?
Why is it important to know the correct orientation of the bulky R group in a Haworth projection?
Why is it important to know the correct orientation of the bulky R group in a Haworth projection?
What is the minimum number of carbon atoms required in a simple sugar molecule?
What is the minimum number of carbon atoms required in a simple sugar molecule?
What type of reaction occurs to form the ring structure in a sugar molecule?
What type of reaction occurs to form the ring structure in a sugar molecule?
What is the fate of the carbonyl oxygen during the ring formation in a sugar molecule?
What is the fate of the carbonyl oxygen during the ring formation in a sugar molecule?
What is the predominant form of glucose in solution?
What is the predominant form of glucose in solution?
What is the exclusive form of glucose in polysaccharides?
What is the exclusive form of glucose in polysaccharides?
What is the advantage of using Fisher projections to represent sugar molecules?
What is the advantage of using Fisher projections to represent sugar molecules?
When drawing the wedge and dash line of a molecule, how should the C atoms adjacent to the one of interest be oriented?
When drawing the wedge and dash line of a molecule, how should the C atoms adjacent to the one of interest be oriented?
Which of the following is true about the orientation of the OH group in the Fisher projection and the wedge and dash drawing?
Which of the following is true about the orientation of the OH group in the Fisher projection and the wedge and dash drawing?
What is a unique feature of b-D-glucopyranose among aldohexoses?
What is a unique feature of b-D-glucopyranose among aldohexoses?
How do substituents that point to the right in the Fisher structure appear in the Haworth projection?
How do substituents that point to the right in the Fisher structure appear in the Haworth projection?
What is the orientation of the OH on the a-anomer in the Haworth projection?
What is the orientation of the OH on the a-anomer in the Haworth projection?
What is the advantage of the Haworth projection over the Fisher projection?
What is the advantage of the Haworth projection over the Fisher projection?
