THE CELL
TRANSPORT INTO AND OUT OF THE CELL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
semi permeable
|
|
|
hydrophilic
|
|
|
mosiac
|
Detailed explanation-1: -Small nonpolar molecules, such as O2 and CO2, are soluble in the lipid bilayer and therefore can readily cross cell membranes. Small uncharged polar molecules, such as H2O, also can diffuse through membranes, but larger uncharged polar molecules, such as glucose, cannot.
Detailed explanation-2: -The selectively permeable membrane is normally semipermeable but allows selective passage of solutes through them.
Detailed explanation-3: -Cell Membrane (Plasma Membrane) The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
Detailed explanation-4: -In osmosis, a semipermeable membrane is present, so only the solvent molecules are free to move to equalize concentration.