DNA is a biological polymer made up of repeating monomer units.
Identify the three chemical groups that must covalently bond to form a single DNA nucleotide monomer.
In a double-stranded B-form DNA molecule, the longitudinal length of the helix increases by 0.34 nm0.34\text{ nm}0.34 nm for every nucleotide pair (base pair).
A single somatic cell from a newly discovered desert rodent, Dipodomus deserti, is found to contain a total of 8.2 × 109 nucleotides within its nuclear genome.
Calculate the total physical length of the double-stranded DNA in this rodent cell. Give your answer in metres to an appropriate number of significant figures.