Consider the following:
1. Oxygen
2. Nitrogen
3. Sulfur
4. Phosphorus
5. Carbon
The DNA is made up of __ ?

Answer: [B] Only 1, 2, 4 & 5

This question is based on difference between DNA and Proteins. DNA does not contain sulfur; proteins do. DNA consists of thesugar deoxyribose, which contains carbon, hydrogen, and oxygen. DNA also contains phosphates, which contain phosphorous and oxygen. DNA also contains nitrogenous bases, which contain nitrogen. This difference in composition between DNA and proteins was the basis of the experiment done by Hershey and Chase.

This question is a part of GKToday's Integrated IAS General Studies Module