Answer :
The total hydrogen bonds are holding the two strands together are 69 hydrogen bond.
What are DNA molecules?
DNA stands for deoxyribonucleic acid. It is defined as the molecules that has genetic material for development of organisms. DNA molecules are made up of two linked strands that resemble a twisted ladder a shape called as a double helix.
As given there are 100 base pair of DNA molecules, in that 100 base pair there is 23% of cytosine base pair. So, to calculate the the amount o hydrogen atoms in the molecules we can just multiply 23 with 3 as it has 3 hydrogen bonds so the result is 46.
Thus, the total hydrogen bonds are holding the two strands together are 69 hydrogen bond.
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