What Kind of Membrane Protein Penetrates into the Hydrophobic Part

Question

What kind of membrane protein penetrates into the hydrophobic part of the lipid bilayer?
A)integral protein
B)lipid-anchored protein
C)peripheral proteins
D)transmembrane protein
E)both integral protein and transmembrane protein

Accepted Answer

Integral proteins and transmembrane proteins both penetrate the hydrophobic core of the lipid bilayer, with transmembrane proteins being a subtype of integral proteins that span the entire membrane.