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  • The carbon of -COR is numbered asOption: 1 Carbon 2Option: 2 Carbon 1<div cla

The carbon of -COR is numbered as

Option: 1

Carbon 2


Option: 2

Carbon 1


Option: 3

Carbon 5


Option: 4

None of these


Answers (1)

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Monosaccharides

  • These are the simple sugars that cannot be broken down through the hydrolysis reaction.
  • They do not have any covalent bond.
  • These are the monomers that would condense via the glycosidic bond (a type of covalent bond) to form polymers of carbohydrates.
  • They are represented by the formula (CH2O)n.
  • The smallest molecules usually considered to be monosaccharides are those with n = 3.
  • Monosaccharides are also classified on the basis of the carbonyl - aldehyde (-CHO) or ketose (-COR) group.
  • Glyceraldehyde is a triose with an aldehyde group.
  • Dihydroxyacetone is a triose with a ketose group.
  • Glucose is a hexose with an aldehyde group.
  • Fructose is a hexose with a ketone group.

TIP: Carbons in a monosaccharide are numbered such that the aldehyde group is carbon number one or the ketone group is carbon number two.

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Carbons in a monosaccharide are numbered such that the aldehyde group is carbon number one or the ketone group is carbon number two.

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