Cell Transport

Question Answer
The transport that does not need any energy from the cell Passive Transport
The movement of molecules from an area of higher concentration to an area of low concentration diffusion
The difference in the concentration of molecules across a distance Concentration gradient
The concentration of molecules will be the same throughout the space the molecules occupy Equilibrium
Diffusion across a membrane Simple diffusion
The process by which water molecules diffuse across a cell membrane from an area of higher concentration to an area of lower concentration Osmosis
When the concentration of solute molecules outside the cell is lower than the concentration in the cytosol Hypotonic
When the concentration of solute molecules outside the cell is higher than the concentration in the cytosol Hypertonic
When the concentration of solute molecules outside and inside the cell are equal Isotonic
Organelles that remove water Contractile Vacuoles
The pressure that water molecules exert against the cell wall Turgor pressure
When cells shrink away from the cell walls Plasmolysis
Transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins Facilitated Diffusion
A protein that transports substances across a cell membrane Carrier Protein
A complex of protein molecules in a cell membrane that form a pore through which ions can pump Ion Channel
A carrier protein that uses ATP to actively transport sodium ions out of a cell and potassium ions into the cell Sodium-Potassium Pump
The process by which cells ingest external fluid, macromolecules, and large particles Endocytosis
Involves the transport of solutes or fluids Pinocytosis
Movement of large particles or whole cells Phagocytosis
Process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food Phagocytes
Process by which a substance is released from a cell through a vesicle that transports a substance to a cell surface and then fuses with the membrane to let the substance out of the cell Exocytosis
SHARE