Chemistry · Biomolecules
JEE Main 2025 — 4 April, Morning Shift — Question 18
The total number of hydrogen bonds of a DNAdouble Helix strand whose one strand has the following sequence of bases is
5'-G-G-C-A-A-A-T-C-G-G-C-T-A-3'
Answer: 33
Numerical answer — enter this value.
Step-by-step solution
There are 2 H -bonds, between A and T and there are 3 H -bonds, between G and C base pairs.

Answer key and solution verified before publishing.
Practise Biomolecules
Start with this question, then two more from the same chapter — with a tutor that explains every step. Free.
- Exam
- JEE Main 2025
- Subject
- Chemistry
- Chapter
- Biomolecules
- Topic
- Nucleic Acids and Other Biomolecules