Question

There are several ways that membrane proteins can associate with the cell membrane. Membrane proteins that extend through the lipid bilayer are called __________________ proteins and have __________________ regions that are exposed to the interior of the bilayer. On the other hand, membrane-associated proteins do not span the bilayer and instead associate with the membrane through an α-helix that is __________________. Other proteins are __________________ attached to lipid molecules that are inserted in the membrane. __________________ membrane proteins are linked to the membrane through noncovalent interactions with other membrane- bound proteins.

Answer 1

Membrane proteins that span the lipid bilayer are known as integral proteins with hydrophilic regions, while proteins that associate through an α-helix are amphipathic. Proteins covalently attached to lipids and peripheral proteins linked by noncovalent interactions are other types of membrane-associated proteins.

Step-by-step explanation:

Membrane proteins that extend through the lipid bilayer are called integral proteins and have hydrophilic regions that are exposed to the interior of the bilayer. On the other hand, membrane-associated proteins do not span the bilayer and instead associate with the membrane through an α-helix that is amphipathic. Other proteins are covalently attached to lipid molecules that are inserted in the membrane. Peripheral membrane proteins are linked to the membrane through noncovalent interactions with other membrane-bound proteins.