Carbohydrate Structures and Conversions Quiz

Which of the following is NOT a way to represent D-Glucose?

• Haworth Projection

• Ball-and-Stick Model

• Fischer Projection

• Chair Conformation

What is the main difference between D-Glucose and D-Fructose in terms of functional groups?

• Both have aldehyde groups

• D-Glucose has an aldehyde group, D-Fructose has a ketone group

• Both have ketone groups

• D-Glucose has a ketone group, D-Fructose has an aldehyde group

In a Fischer Projection, what is the orientation of the lowest chiral carbon's OH group in D-Glucose?

• Left

• Down

• Right

• Up

What initiates the formation of a cyclic sugar from its linear form?

• Protonation of the carbonyl group

• Nucleophilic attack by an oxygen atom

• Hydrogen bonding

• Dehydration reaction

Which carbon's oxygen attacks the carbonyl carbon in the formation of a pyranose ring?

• Carbon 5

• Carbon 1

• Carbon 2

• Carbon 6

When converting a Fischer Projection to a Haworth Projection, what happens to groups on the right side of the Fischer Projection?

• They are removed

• They remain unchanged

• They are drawn down

• They are drawn up

In a Haworth Projection, what determines whether the OH group on the anomeric carbon is drawn up or down?

• The position of the carbonyl group

• The type of sugar (D or L)

• The direction of nucleophilic attack

• The hybridization of the carbonyl carbon

What type of ring is formed when the oxygen on carbon 5 attacks the carbonyl carbon in fructose?

• Furanose

• Hexose

• Pyranose

• Pentose

Which carbon's oxygen attack results in a pyranose ring in fructose?

• Carbon 1

• Carbon 5

• Carbon 6

• Carbon 2

In the context of sugar chemistry, what does the term 'anomeric carbon' refer to?

• The carbon that is always at the top of the Fischer Projection

• The carbon that becomes chiral during ring formation

• The carbon that is part of the carbonyl group

• The carbon that forms the glycosidic bond