A True or False Movement of water across the plasma membran

A. True or False - Movement of water across the plasma membrane can happen without the utilization of energy

B. ____________________ is used by macrophages to consume large particles such as bacteria. Pinocytosis Phagocytosis Exocytosis None of these

Solution

A. True

Although water is a polar molecule, it is able to pass through the lipid bilayer of the plasma membrane. Aquaporins transmembrane proteins that form hydrophilic channels greatly accelerate the process, but even without these, water is still able to get through.

B. Phagocytosis

During phagocytosis, cells engulf large particles such as bacteria, cell debris, or even intact cells.