Topic 1 - Osmosis Flashcards
1
Q
what is osmosis?
A
net movement of water molecules across a partially permeable membrane from a region of higher water concentration to a region of lower water concentration
2
Q
what is a partially permeable membrane?
A
a membrane with very small holes that only small molecules can pass through.
3
Q
what fluid surrounds the cells in the body?
A
tissue fluid
4
Q
if a cell is short of water, what happens with the tissue fluid?
A
the solution in the cell becomes more concentrated, so water moves from the more dilute tissue fluid into the cell.
5
Q
if a cell has lots of water, what happens with the tissue fluid?
A
the solution in the cell becomes more dilute, so water moves from the diluted cell into the concentrated tissue fluid
