Latest news from New Sharon, IA collected exclusively by city-data.com from local newspapers, TV, and radio stations. Ancestries: German (27.3%), Irish (16.3%), English (13.6%), Dutch (10.5%), United States (8.2%), Scottish (2.6%). Current Local Time: CST time zone. Incorporated in 1871.
The______ portion of the cell membrane is responsible for the isolating function of the membrane, whereas the ____________ portion regulates exchange and communication with the environment. Lipid; protein. Phospholipids spontaneously form a bilayer in an aqueous solution.
As you learned in the chapter on cells, the cell membrane is primarily responsible for regulating what can cross the membrane and what stays on only one side. The cell membrane is a phospholipid bilayer, so only substances that can pass directly through the hydrophobic core can diffuse through unaided.