This is the British English definition of vague. View American English definition of vague. Change your default dictionary to American English. View the pronunciation for vague.
Fluid-mosaic model. 1  Plasma membrane consists of a phospholipid bilayer studded with proteins, polysaccharides, lipids. 2  The lipid bilayer is semipermeable Regulates passage of substances into and out of the cell. H2O and some small, uncharged, molecules (O2, CO2) can pass through.
Some channels let certain ions flow out, others let different ions flow in. The same membrane system is at work in other cells, helping to regulate what stays and what leaves the cell. This cell membrane gateway system is specifically called the A) sodium-chlorine pump.