DNA double helices are soluble in water but insoluble in alcohol.How do these physical properties reflect the chemical structure of the molecule?
A)The charged phosphate groups and sugars of DNA "like" to interact with polar water molecules.
B)The purine and pyrimidine bases "like" to interact with polar water molecules.
C)The 5 prime to 3 prime polarity of DNA make it soluble in water but not in alcohol.
D)The charged R-groups of DNA "like" to interact with polar water molecules.

Question

Quizplus · Accepted Answer

The charged phosphate groups and sugars of DNA "like" to interact with polar water molecules, making DNA soluble in water. Alcohol is nonpolar and cannot form hydrogen bonds with the charged components of DNA, making it insoluble in alcohol.

DNA Double Helices Are Soluble in Water but Insoluble in Alcohol.How