MCQ
The reason for double helical structure of $DNA$ is operation of
- AVander Waal's forces
- BDipole-dipole interaction
- ✓Hydrogen bonding
- DElectrostatic attractions
✓
Answer
Correct option: C.
Hydrogen bonding
c
$DNA$ is the chemical name for the molecule that carries the genetic information of all living beings.
$DNA$ is the chemical name for the molecule that carries the genetic information of all living beings.
The polymer molecule consists of $2$ strands that wind around each other to create a form called a spiral. Every strand includes
a backbone manufactured from alternating sugar (deoxyribose) and phosphate molecules.
The two polynucleotide chains or strands of polymer are joined up by Hbonding.
Adenine-Thymine ( has two $H-$bonds) and Cytosine-Guanine (has three $H-$bonds).
Therefore the double-helical structure of $DNA$ is due to $H$-bonding.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Chlorine can remove
Which of the following reagent is used for the following reaction ?
→$CH _{3} CH _{2} CH _{3} \stackrel{?}{\longrightarrow} CH _{3} CH _{2} CHO$
Which of the following does not give yellow precipitate with ${I_2}$ and $NaOH$
→Configuration of $Yb^{+2}$ is
→Which structure of protein remains intact after coagulation of egg white on boiling?
Amongst the given set of reactants, the most appropriate for preparing $2^\circ $ amine is $......$
→The number of electrons in the outermost shell of the $3d-$ transition elements generally remains
→Argyrol is a:
Give the major product of the following reaction
Oxygen gas can be prepared from solid $KMn{O_4}$ by
→