Answer: All plasma membrane surfaces are hydrophilic. In comparison, because of the fatty acid tails, the interior of the membrane between its two surfaces is a hydrophobic or nonpolar region. The main fabric of the membrane is composed of two layers of phospholipid molecules. The hydrophilic or "water-loving" areas of these molecules are in contact with the aqueous fluid both inside and outside the cell. Hydrophobic, or water-hating molecules, tend to be non-polar.
I know this is not gonna help that much because I don't know the answer but all I know is that it's not C. The hydrophilic regions of phospholipids are positioned in the interior of the bilayer, while the hydrophobic regions are exposed to the cytosol and extracellular environment. because I got that wrong.
Ang mga hadlang sa kalakalan ay mga paghihigpit na sapilitan ng pamahalaan sa internasyonal na kalakal, na karaniwang binabawas ang pangkalahatang kahusayan sa ekonomiya.
