Question

Integral proteins are embedded in the phospholipid bilayer, and also called transmembrane proteins. Often times these integral proteins serve as channels through which molecules move across the cell membrane. Proteins embedded in the interior of the bilayer of the membrane are .......... and are made up of non-polar ..........

• A. Nonpolar, Nucleic acids
• B. Polar, Amino acids
• C. Hydrophilic, Nucleic acids
• D. Hydrophobic, Amino acids

Answer 1

Answer: (D)

Hydrophobic, Amino acids

The proteins that are embedded in the bilayer, the surface of the protein facing the bilayer is hydrophobic or lipophilic and made of non-polar amino acids to prevent repulsion.

So, the correct answer is 'Hydrophobic, Amino acids'