Question
Chemistry Question on Biomolecules
Which of the following is correxct about Hbonding in nucleotide
A
A–T G–C
B
A–G T–C
C
G–T A–C
D
A–A T–T
Answer
A–T G–C
Explanation
Solution
The correct option is(A): A–T G–C. Structure of DNA molecule is a double helix structure. In this structure double helix are made up of polynucleotide chains which are held together by H-bonds the adenine (A) base is linked with thymine (T) by two H-bonds and guanine (G) is linked with cytocine (C) by three H-bonds as A–T G–C.