Unit 2 Flashcard 2

Front

Process by which particles move from an area of high concentration to an area of low concentration.

Back

diffusion

Front

The state of relatively constant internal physical and chemical conditions.

Back

homeostasis

Front

Solution outside the cell has a higher concentration of solutes than inside the cell; a net movement of water molecules out causes the cell to shrink.

Back

hypertonic

Front

The process of taking material into the cell by means of infolding or pockets of the cell membrane forming to create a vesicle or vacuole.

Back

endocytosis

Front

The movement of molecules against a concentration gradient that requires energy.

Back

active transport

Front

The diffusion of water through a selectively permeable membrane.

Back

osmosis

Front

Solution outside of the cell has a lower solute concentration than inside the cell; a net movement of water molecules which causes the cell to swell.

Back

hypotonic

Front

When the concentration of a substance on both sides of a cell membrane are the same; molecules continue to move across the membrane in both directions but no net change in concentration.

Back

equlibrium

Front

The process where cells release large amounts of material when the membrane of the vesicle or vacuole surrounding the material fuses with the cell membrane.

Back

exocytosis

Front

The process by which molecules that cannot directly diffuse across the membrane pass through the cell membrane via special protein channels.

Back

facilitated diffusion