Question

Choose the correct answer from the alternatives given.
Which phrase does not describe one of the functions of proteins of the plasma membrane?

• A. Forming a channel through the membrane
• B. Initiating the replication of the genetic material
• C. Binding to a substance to carry it through the membrane
• D. Acting as a receptor for substances external to the cell

Answer 1

Answer: (B)

Initiating the replication of the genetic material

In the fluid mosaic model, the phospholipid bilayer has integrated as well as peripheral proteins embedded in it. The integrated proteins are found on the inside and span across the bilayer, while the peripheral proteins are found at the periphery of the lipid layers. This bilayer is composed of hydrophilic phosphate heads and hydrophobic tails. The plasma membrane forms a channel through the membrane, has receptors for binding to different substances, and their transport in and out of the cell. However, it is not involved in the initiation of replication of genetic material.

So, the correct answer is 'Initiating the replication of the genetic material'.