(I) DNA being a hydrophilic molecule cannot pass through ce…

Biology Biotechnology Principles and Processes Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

(I) DNA being a hydrophilic molecule cannot pass through cell membranes.

(II) The bacteria should be made competent to accept the DNA molecule.

The correct option regarding the above statements is

(I) is true, but (II) is false

(II) is true, but (I) is false

(I) and (II) are true

(I) and (II) are false

Text Solution

Verified by Experts

The correct answer is:

(I) DNA is a hydrophilic and negatively charged molecule, so it cannot easily pass through the lipid cell membrane.

(II) Bacterial cells must be made competent (e.g., by CaCl 2 treatment and heat shock) to take up foreign DNA.

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