osmosis Flashcards
osmosis have solutions in which:(2)
Water(solvent)
the chemicals dissolved (solute)
Define osmosis
the diffusion of water through a partially permeable membrane from a dilute solution to a concentrated solution.
dilute solution
a region that has a lot of them
concentrated solution
a region where there are fewer of them
solution formula
H20 (solvent) + solute (chemicals)
Dilute formula
more H20 + <Solute
Concentrated formula
Less H20 and >solute
A red blood cell has a ________________ cell surface membrane and no _________
partially permeable
cell wall
This is what happens to a red blood cell if it were placed in;
A solution more concentrated than its own contents (hypertonic)—
A solution more dilute than its own contents (hypotonic)—
net flow of water out,
net flow of water in
In our bodies we have _____________ that work to keep our blood plasma at the same concentration as our red blood cells.
mechanisms
Which would be more harmful – our blood plasma becoming more dilute or more concentrated than our red blood cells?
Our blood becoming more DILUTE than our red blood cells- we cannot repair burst red cells
BUT
concentrated red cells will still carry oxygen.
What happens to the movements of molecules at equilibrium?
the movement of molecules continues
What type of metabolism occurs when your body get nutrients from foods?
Anabolism (requires energy that ultimately comes from our food.)
A partially permeable membrane is one that will allow free movement of ________, but not of the solute molecules, through it.
water molecules
Hypotonic
MORE water OUTSIDE the cell; water moves into the cell (Lysis-cell bursts)
