Question

dna is a nucleic acid polymer composed of which repeating structural unit?
o nucleotides
o phosphate groups
o ribosomes
o proteins

Explanation:

DNA is a nucleic - acid polymer made up of repeating units called nucleotides. Each nucleotide consists of a sugar, a phosphate group, and a nitrogen - containing base. Phosphate groups are part of a nucleotide, ribosomes are involved in protein synthesis, and proteins are different from the structural units of DNA.

Answer:

nucleotides