NUTRITION
CARBOHYDRATES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What two groups are removed from monosaccharides to form disaccharides or polysaccharides
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water and oxygen
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hydrogen and hydroxyl group
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carbon and hydrogen
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water and carbon
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Explanation:
Detailed explanation-1: -Formation. The formation of a disaccharide molecule from two monosaccharide molecules proceeds by displacing a hydroxy group from one molecule and a hydrogen nucleus (a proton) from the other, so that the now vacant bonds on the monosaccharides join the two monomers together.
Detailed explanation-2: -The hydrogen (H) and hydroxyl (OH) group that are removed from the sugars form a covalent bond creating water (H2O). This type of bond is known as an -1, 4-glycosidic linkage.
Detailed explanation-3: -Hence, the functional groups in open structure of monosaccharide are hydroxyl, and aldehyde or ketone, while in ring structure it is hemiacetal or hemiketal.
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