Biology · Principles and Processes in Biotechnology
हिन्दीGiven below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).\n Assertion (A): DNA cannot easily pass across the lipid bilayer membrane of a bacterial cell without special chemical or physical treatment.\n Reason (R): DNA is a hydrophobic polymer with non-polar nitrogenous bases on its exterior. \nIn the light of the above statements, choose the correct answer from the options given below:
Correct answer · Option 3
is true but (R) is false.
Explanation
Assertion is true because DNA is hydrophilic (polar, negatively charged), not hydrophobic, which is why it cannot easily pass through hydrophobic lipid membranes.