Cells

regions of the cell

plasma membrane

what does the cytoplasm do?

3 functions of cell membrane

What do the different membrane proteins do?

ion channels

selective permeability

Crossing the cell membrane

concentration gradient

2 ways substances move across membrane

Passive process

diffusion

facilitated diffusion

osmosis

3 possibilities of osmosis

isotonic

hypertonic

hypotonic

Active process
(crossing cell membrane)

endocytosis

2 kinds of endocytosis

exocytosis

2 important kinds

Cytoplasm

2 components cytoplasm

cytosol

organelles