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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
What are monosaccharides ?

Monosaccharides are simple sugars with only one sachharide unit. These cannot be hydrolysed into simpler forms. A monosaccharide containing an aldehydic group (–CHO) in its molecule is called aldose. The glucose and galactose are aldoses. A monosaccharide which contains a keto group (> C = O) in its molecule is called ketose. Fructose is a ketose. 

What is the percentage of nucleic acids in cells ?

5 - 7 percent

Give the names of two monosaccharide sugars.

Fructose and glucose are two monosaccharides

Name one monosaccharide which provides energy ?


What are major elements of a cell ?

Carbon, hydrogen, oxygen and nitrogen are the major elements of a cell.

What is the general formula of carbohydrates ?

The carbohydrate has a general formula - CnH2nOn Or (CH2O)n.