Tag: biomolecules

Aspartame is artificial sugar so it does not increases the calorie intake it only induces the sweetness.

False-Aidohexoses exist in $2^4(= 16)$ optical forms.

False-On hydrolysis, it gives three molecules of monosaccharide units one each of glucose, fructose and galactose

False-Fructose is more sweeter than glucose

Two-dimensional ascending chromatography has been employed to separate a mixture of monosaccharides.

Monosaccharide is single polyhydroxy aldehyde (aldose) or ketone (ketose) units. Glucose is a single polyhydroxy aldehyde, while fructose is a single polyhydroxy ketone. A monosaccharide contains a skeleton, of carbon atoms. The minimum number of carbon atoms is three and it can go up to seven.

A carbohydrate that cannot be hydrolysed further to give simpler unit of polyhydroxy aldehyde or ketone is called a monosaccharide. Some common examples are glucose, fructose, ribose, etc.
Carbohydrates that yield two to ten monosaccharide units, on hydrolysis, are called oligosaccharides. They are further classified as disaccharides, trisaccharides, tetrasaccharides, etc., depending upon the number of monosaccharides, they provide on hydrolysis. Amongst these the most common are disaccharides. The two monosaccharide units obtained on hydrolysis of a disaccharide may be same or different.

Glucose and fructose are both monosaccharides as they cannot be hydrolysed further to simple sugars.