16 Questions
Which elements are carbohydrates composed of?
C, H, O
Which functional groups may be present in carbohydrates?
Hydroxyl group, aldehyde group, keto group
What is the empirical formula for carbohydrates when n = 5?
C5H10O5
Which classification of carbohydrates includes trioses, tetroses, and hexoses?
Monosaccharides
How is the designation of a sugar isomer as the D form or L form determined?
By the orientation of the -OH and -H groups around the asymmetric carbon atom
Which of the following is the simplest aldose?
Glyceraldehyde
Which sugar naturally occurs in the L form?
Arabinose
What confers optical activity on a compound?
The presence of asymmetric carbon atoms
Which sugar is dextrorotatory in solution?
Glucose
What produces epimers in monosaccharides?
Variations in configuration of the -OH and -H on carbon atoms 2, 3, or 4
Which sugar is an example of an aldose?
Arabinose
What determines whether a sugar belongs to the D or L series?
The orientation of the -OH and -H groups around the terminal primary alcohol carbon
Which sugar is a ketose?
Dihydroxyacetone
Which type of sugars occur in most mammals?
Aldose sugars
Which sugar is levorotatory in solution?
Fructose
What determines whether a sugar belongs to the D or L series?
The orientation of the -OH and -H groups around the carbon atom adjacent to the terminal primary alcohol carbon.
Learn about the general characteristics of carbohydrates, including their chemical composition, empirical formula, and abundance in nature. Understand the presence of hydroxyl, aldehyde, and keto groups in monosaccharides.
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