Biomolecules - Result Question 58
####58. The couplings between base units of DNA is through :
[1992]
(a) Hydrogen bonding
(b) Electrostatic bonding
(c) Covalent bonding
(d) van der Waals forces
Topic 4: Vitamins and Hormones
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Solution:
- (a) DNA consists of two polynucleotide chains, each chain forms a right handed helical spiral with ten bases in one turn of the spiral. The two chains coil to double helix and run in opposite direction held together by hydrogen bonding.
