Question

What kind of membrane protein penetrates into the hydrophobic part of the lipid bilayer?

1) integral protein
2) lipid-anchored protein
3) peripheral proteins
4) phosphatidylcholine
5) galactocerebroside

Answer 1

Integral proteins are the type of membrane proteins that penetrate the hydrophobic part of the lipid bilayer and can span the entire membrane. Option number 1 is correct.

Step-by-step explanation:

The kind of membrane protein that penetrates into the hydrophobic part of the lipid bilayer is known as an integral protein. These proteins are integrated completely into the membrane structure, with hydrophobic regions that interact with the hydrophobic core of the phospholipid bilayer and hydrophilic regions that may protrude on either side of the membrane.

This amphipathic nature allows the integral proteins to span the entire membrane, making them crucial for certain cellular functions such as forming channels or pumps which help move materials into or out of the cell.