Question: Which of the following is false about purine and pyrimidine bases?
Options
A : They are hydrophobic and relatively insoluble in water at the near-neutral pH of the cell
B : At acidic or alkaline pH the bases become charged and their solubility in water increases
C : Purines have two rings in their structure, but pyrimidine bases have only one ring
D : At acidic or alkaline pH the bases become charged and their solubility in water decreases
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