BIOLOGY
STRUCTURE OF GLUCOSE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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C-1
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C-2
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C-3
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C-5
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Detailed explanation-1: -In carbohydrate chemistry, diastereomers differing only at the hemiacetal or acetal carbon are called anomers, and the hemiacetal or acetal carbon atom is called the anomeric carbon atom. -form & -form, are called anomers. Thus C1 carbon becomes the anomeric carbon of glucose in its pyranose form.
Detailed explanation-2: -The anomeric carbon of glucose is the hemiacetal carbon, which is the carbon bonded to the ring oxygen and a hydroxyl group in the cyclic form of glucose. The carbonyl carbon of the aldehyde in the open-chain form of glucose becomes the anomeric carbon in the cyclic form.
Detailed explanation-3: -Anomeric carbon – the carbon of a cyclic sugar bearing a hemiacetal or acetal (hemiketal or ketal). This is C-1 in aldoses, and C-2 in the case of fructose.
Detailed explanation-4: -In the cyclic form of a sugar, the anomeric carbon is the carbon that was part of the carbonyl group in the straight-chain structure. When the chain converts to a ring, C-1 becomes a chiral centre. C-1 is the anomeric carbon.
Detailed explanation-5: –In the open chain form of the sugar, the anomeric carbon is known to be the carbonyl carbon that is involved in the aldehydic or the ketonic group. After cyclization, the anomeric carbon is found near the oxygen atom in the pyranose or furanose ring.