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Class 10 Class 12
Distinguish between Aldose sugar and Ketose sugar.

 Aldose sugar Ketose Sugar (1) It has an aldehyde group. (2) First carbon forms a part of aldehyde group. (3) Aldoses are more common in nature e.g. ribose, glucose. (1) It has a ketone group. (2) Second carbon forms a part of keto group. (3) Ketose are less common in nature, e.g. ribulose, fructose.

Name one monosaccharide which provides energy ?

Glucose

What is the general formula of carbohydrates ?

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

Give the names of two monosaccharide sugars.

Fructose and glucose are two monosaccharides

What is the percentage of nucleic acids in cells ?

5 - 7 percent

What are major elements of a cell ?

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

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