osmosis
some molecules can slip through the membrane, however this is kind of hard because water molecules are polar and the center of the membrane is nonpolar. Most water moves through special integral (transmembrane) proteins called aquaporins.
it is determined by the concentration of water on either side of the cell membrane.
-Stean alfonsi answered this.
The direction of the water depends on the relative concetration of solutes on two sides of the membrane
Water across a membrane travels down its concentration gradient. That is, it moves from higher areas of concentration to lower areas of concentration until equilibrium is reached.
The concentration gradient.
because of the gravity of the earth , :P
isotonic
Molecules
Molecules
The term used is osmosis. the direction of movement across the membrane is dependent on the concentration of solutes (known as the solute potential) which directly effects the osmotic potential.
The movement of water across a membrane is called osmosis.
the movement of ions across a cell membrane.
Cell membrane
Alcohol moves across the cell membrane by means of osmosis.
partial pressure gradient
by latitude and is affected by the movement of earths air
The term used is osmosis. the direction of movement across the membrane is dependent on the concentration of solutes (known as the solute potential) which directly effects the osmotic potential.
excretion, transport and respiration
The movement of water across a membrane is called osmosis.
In the same direction as the movement
nuclear membrane
The cell membrane controls the movement into and out of the nucleus. The cell membrane is a barrier that keeps cellular materials in and foreign objects out.
osmosis is a movement of a fluid that passes through a semipermable membrane
the movement of ions across a cell membrane.
Cell membrane
Plasma membrane a.k.a. --- cell membrane