Cell Transport Flashcards
Move solutes across the cell membrane without expenditure of energy.
Diffusion
Diffusion, facilitated diffusion, and osmosis, are examples of
passive transport
The tendency of molecules or ions to move from an area where they are in higher concentration to an area where they are in lower concentration, that is, down or along their concentration gradient
diffusion
The difference between the high and low concentrations of the particles
concentration gradient
The diffusion of water down a concentration gradient from an area of high water concentration to an area of low water concentration.
osmosis
Solution with the same concentration solutes as those found in cells
Isotonic
When a cell is placed in ____ solution, it retains its normal shape, and exhibits no net loss or gain of water.
isotonic
A solution that causes water to move inside the cell
hypotonic
solutions that are more dilute (contain a lower concentration of solutes) than the cell’s cytoplasm
hypotonic
Solutions with a higher concentration of nonpenetrating solutes compared to the cytoplasm of the cell
hypertonic
Solution that contains more solute, less water
hypertonic
Transmembrane proteins that transport substances, usually ions or water, through aqueous channels from one side of the membrane to the other.
protein channel
The movement of particles against a concentration gradient, requires energy.
active transport
The two types of endocytosis are
phagocytosis and pinocytosis
Type of transport where the cell brings in solid particles and requires energy,.
phagocytosis
