Question

Explain the structure and function of DNA. What important roles does the phosphate-sugar backbone, nitrogen bases, complementary strands, and hydrogen bonds play in the structure of DNA?

Answer 1

Answer: DNA is made of a double helix strand each made of a glycophosphate backbone and nitrogenous bases as rungs to a ladder. They behave like bases because they are proton acceptors and hence have a net positive charge. Because they have charges they will have electric fields around them. Two pairs of bases on the opposite strands will, therefore, be bound by hydrogen bonds whose strength is governed by Coulomb's law – determined by the charges and the distance between them.

Explanation: edmentum course activity

Answer 2

DNA structure is a helix . DNA function is to form the hereditary code of a living organism. This involves physical and acquired traits ( eyes, hair, skin, tendencies). The roles you listed above all are part of the biological chemistry involved in the DNA process.