The pentose sugar in DNA and RNA has the:

open chain structure

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pyranose structure

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furanose structure

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All of the above

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Solution

The correct option is C furanose structure
Ribose and deoxyribose are 5 carbon sugars which are found in RNA and DNA. They have a furanose structure that is a 5 membered ring system with 4 carbon atoms and one oxygen atom.

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