Why does it take more energy to seperate GC rich DNA than AT rich DNA?

Question

Why does it take more energy to seperate GC rich DNA than AT rich DNA?

Answer 1

GC base pairs exhibit 3 hydrogen bonds.

AT base pairs exhibit 2 hydrogen bonds.

It takes a greater amount of energy to separate 3 bonds than it does to separate 2 bonds.

Answer 2

GC is held by three hydrogen bonds and AT is held by two hydrogen bonds. One hydrogen bond is one-length of the covalent bond. To break a GC pair would require more energy than an AT pair.

Answer 3

Because there are 3 hydrogen bonds holding G and C base pairs together and only 2 hydrogen bonds holding A and T base pairs together. So more energy is needed  as more hydrogen bonds have to broken.

Answer 4

in GC pair u see,there r 3 hydrogen bonds bt in AT there r 2 hydrogen bonds...

Answer 5

GC pairs have 3 hydrogen bonds.  AT pairs have 2.