NUTRITION
CARBOHYDRATES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
True
|
|
|
False
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -Glucose, fructose and galactose are known as isomers because they have the same chemical formula and they basically vary only in the arrangement of atoms in the molecule.
Detailed explanation-2: -For D-glucose, the-OH is on the right in Fischer Projection, and for D-galactose, the-OH group is on the left. That single different makes D-glucose and D-galactose epimers. They are not enantiomers, or diastereomers, or isomers, they are only epimers.
Detailed explanation-3: -Galactose is an isomer of glucose. This means that they both share the same formula: C6H12O6. The only real difference is that the-H and-OH groups on carbon 4 (labelled) face in different directions.
Detailed explanation-4: -Glucose, galactose, and fructose are isomeric monosaccharides (hexoses), meaning they have the same chemical formula but have slightly different structures. Glucose and galactose are aldoses, and fructose is a ketose.