Question

Select the incorrect statements.

• A. Molecular formula of glucose and fructose is similar.
• B. Galactose is made up of chains of glucose.
• C. Glucose, fructose and maltose are monosaccharides.
• D. Cellulose is made up of monosaccharide units.
  

Answer 1

Answer: (B), (C)

The correct options are
B Galactose is made up of chains of glucose.
C Glucose, fructose and maltose are monosaccharides.

• General molecular formula $C_6{H}_{12}{O}_6$ of glucose, fructose and galactose are similar in nature and they differ only in structure.
• Galactose and glucose aresimilar in nature but differs in structure. It is polysaccharides like cellulose, starch, glycogen etc., which are made up of chains of glucose.
• Glucose, fructose and galactose are monosaccharides but maltose is a disaccharide.
• Cellulose and starch which are made up of more than 10 monosaccharides are hence a polysaccharide.