Chau-io in Bio: [BOW] Cell Movement Examples

Diffusion: the spreading of something more widely
Ex: The sickening scent of cigarette smoke spreads through the air.

Video:

Facilitated diffusion: a passive movement that does not require energy like ATP or carrier proteins
Ex: sodium ions go through facilitated diffusion

Video:

Active transport: the movement of a chemical substance through a gradient of concentration in the direction opposite to
Ex: Fish gills have cells that remove salt from the body by pumping it into the salt water

Video:

Osmosis: the tendency of a fluid to pass through a semipermeable membrane into a solution where the solvent concentration is higher.
ex: when you put salt on a slug, water diffuses the slug and causes it to shrivel up

Video:

endocytosis: the process in which the cell takes in materials from the outside and fusing them with its plasma membrane
ex: skeletal muscle cells taking in neurotransmitters