The process in which water molecules diffuse across the cell membrane from an area of higher concentration to lower concentration. It is a type of diffusion and does not require active transport.
The movement of molecules from an area of higher concentration to an area of lower concentration. (Moves with the concentration gradient)
The movement of molecules across the cell membrane conducted with the help of carrier proteins. ("Doorways" into the membrane) This process is passive transport.
Active vs. Passive Transport
Active- Requires Energy
Passive- Does Not Require Energy
The process in which cells ingest fluid (how the cells 'drink/eat') This requires energy and is therefore active transport.
Form of endocytosis that takes in fluids (Drinking)
Form of endocytosis that takes in large particles or cells (Eating)
Process in which the cell expels materials out through the membrane. Requires Active Transport.
Proteins that are attatched to the surface of the cell membrane.
Proteins that are located on both the interior & exterior surface of the cell membrane.
Proteins that are embedded in the bi-layer of the cell membrane.
When the concentration of molecules is the same throughout a space. (Diffusion does not stop as the molecules stay in motion)