Question

why does dna cannot pass through the cell membrane?

Answer 1

Molecules that are hydrophobic can easily pass through the plasma membrane, if they are small enough, because they are water-hating like the interior of the membrane. ... The hydrophilic (polar) head group and hydrophobic tails (fatty acid chains) are depicted in the single phospholipid molecule.

Answer 2

DNA is a genetic material found in living beings. The DNA cannot pass through the cell membrane due to the following reason:

Explanation:

• The DNA is a hydrophilic molecule which has sugar phosphate backbone. The hydrophilic nature of DNA makes it a polar molecule that is it can be easily dissolved in water.
• But the DNA cannot pass through the cell membrane as the cell membrane is hydrophobic in nature due to the presence of lipid bilayer. The hydrophilic and hydrophic molecules will remain separated.

Learn more about DNA:

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