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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
Cholesterol is harmful as it causes blood pressure and heart attack, even then it is considered essential for human body. Why ?

Cholesterol are considered essential for our body as

1. Cholesterol is  the precursor of many hormones such as progesterone, testosterone, estradiol and Cortisol.
2. Cholesterol provides fluidity to the cell membrane  and hence helps in the maintenace of its structure.

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.

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 ?