turb other students. Texts, stamped chapter summaries owed. No internet access i

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turb other students. Texts, stamped chapter summaries owed. No internet access is allowed. All naturally occurring sugars can be degraded to: D-(-)-glyceraldehyde D-(+)-glyceraldehyde L-(-)-glyceraldehyde L-(+)-glyceraldehyde none of the above All chiral D-sugars rotate plane-polarized light: clockwise. counterclockwise. plus20.0 degree. in a direction that cannot be predicted but must be determined experimentally. since they arc optically inactive. A diastereomer is called erythro if its Fischer projection shows similar groups: opposite each other on the same carbon. equally spaced about a central carbonyl. directly above and below a central carbonyl. on the same side of the molecule on adjacent carbons. on opposite sides of the molecule on adjacent carbons. Stereoisomeric aldohcxoses that differ in configuration at only a single carbon are: meso compounds. threo sugars. enantiomers. constitutional isomers. epimers. A gamma-hydroxyaldchyde may cyclize to form: a hemiacetal. an ester. a pyrimidine. a lactone. a lactam.

Explanation / Answer

QUESTION 01

Solution: (B)

All naturally ocuuring sugars are D, and D sugars can be converted/ or degraded to D-(+)-glyceraldehyde.

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