fluid mosaic model:

Cell membrane

1. Diffusion: ( molecules )

   

1.  

Definition: the net movement of a substance traveling down its concentration gradient

Osmosis

Diffusion of water across a selectively permeable membrane.

Facilitated Diffusion

Passive transport using membrane proteins for larger molecules.

Active Transport

Movement against gradient using energy (ATP).

Vesicular transport (endocytosis)

Endocytosis is when a cell takes in substances by wrapping them in a membrane and forming a vesicle.

Vesicular transport (exocytosis)

exocytosis is where a cell releases substances by packaging them into vesicles, which then fuse with the cell membrane and expel their contents outside.