What best describes the structure of a dna molecule (apex)

Answer: Two strands of DNA joined by nitrogenous bases a double helix

Hello. This question is incomplete. The full question is:

"What best describes the structure of a dna molecule (apex)

A. A strand of DNA linked to a strand of RNA B. Two strands of DNA linked together C. Two strands of RNA linked together D. Two strands of amino acids linked togethe"

Answer:

B. Two strands of DNA linked together

Explanation:

DNA (Deoxyribonucleic Acid) is a molecule present in the nucleus of the cells of all living beings and which carries all the genetic information of an organism.

It consists of a double spiral-shaped ribbon (double helix), composed of nucleotides. That is, its structure is characterized as two strands of DNA linked together.

The two strands that make up the DNA wrap around each other and join through hydrogen bonds, which are formed between the 4 nitrogenous bases of the nucleotides: Adenine, Thymine, Cytosine and Guanine.