The Open-Chain Form of a Carbohydrate Contains a Carbonyl Group

question 7

Multiple Choice

The open-chain form of a carbohydrate contains a carbonyl group.This carbonyl group reacts to become an alcohol when the ring closes, forming the anomeric carbon.The type of carbonyl determines which type of ring is formed.Select the choice in which the type of carbonyl is paired with the correct type of ring that is formed.

• A) ketone and pyranose
• B) aldehyde and pyranose
• C) carboxylic acid and furanose
• D) carboxylic acid and pyranose
• E) aldehyde and furanose

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