What gives dna its acid property?
a. the parts that make up the steps
b. the sugar
c. the part that alternates with sugars in a strand
d. the hydroxyl group attached to the 4' carbon
e. the covalent bonds that connect the steps to the strands

The correct answer will be option-C.

Explanation:

Each DNA molecule exists in helical shape made by two strands of nucleotides. Each nucleotide is composed of a five-carbon sugar, a phosphate group and nitrogenous bases.

The sugar-phosphate unit bond via the phospho-diester bond and form the backbone of the DNA. The phosphate functional group is acidic in nature as it donates the proton while the formation of the phosphodiester bond which provides DNA with the acidic nature.

Thus, Option-C is the correct answer.

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