17 Questions
What is the key characteristic of a compound with D-configuration?
It can be either dextrorotatory (D+) or levorotatory (D-)
What is the relationship between D-glucose and D-fructose?
They are enantiomers
How does the rotation of polarized light occur when it passes through a solution of an optical isomer?
The light is rotated to the right (dextrorotatory)
What is the relationship between the D-configuration and the direction of rotation of polarized light?
D-configuration can be associated with both dextrorotatory and levorotatory rotation
What is the relationship between anomerism and optical activity in carbohydrates?
Anomerism can result in either dextrorotatory or levorotatory optical activity
What is the most common type of glycosidic linkage found in polysaccharides?
β-1,4 linkage
Which of the following statements about the monosaccharide units in polysaccharides is correct?
Polysaccharides contain more than 20 monosaccharide units
What is the relationship between D-glucose and L-glucose?
D-glucose and L-glucose are enantiomers
Which of the following is true about the ring structure of sugars in solution?
Aldoses form pyranose rings, and ketoses form furanose rings
What is the difference between an anomer and an epimer?
Anomers differ in the configuration of the anomeric carbon, while epimers differ in the configuration of any other carbon atom
Which of the following statements about D-sugars and L-sugars is correct?
D-sugars and L-sugars are enantiomers, and only D-sugars are utilized by humans
What term is used to describe an asymmetric carbon atom in a ring structure?
Anomer
In which type of sugars do anomers differ at only C1 for aldoses and C2 for ketoses?
Monosaccharides
Which pair of sugars represents an example of alpha and beta anomers?
D-glucose and D-fructose
What term describes variations in the configuration of -H and -OH around a single carbon atom?
Epimerism
Mannose is considered an epimer of glucose because they differ in configuration around which carbon atom?
C2
What property allows compounds with asymmetric carbon atoms to rotate plane polarized light?
Optical activity
Learn about anomeric carbon atom formation and anomerism in aldoses and ketoses, as well as the concept of epimerism in carbohydrates, with examples like α-D-glucose, β-D-glucose, α-D-fructose, and β-D-fructose.
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