membrane transport quiz reveiw

Selective permeability is:

Active + Passive control, Chemical + Size selective, protein mediated transport

Selective permeability is NOT:

Purely passive size fitter, not just semi-permeable, not impermeable, not freely permeable

Which transport methods are passive (No ATP)

Diffusion, osmosis, facilitated transport

Which transport methods are active (ATP)

Active transport, endocytosis, exocytosis

Diffusion

Small and non-polar

Facilitated

Small or large and polar (uncharged)

Facilitated/ Active Transport

Charged (Ions)

Endocytosis and Exocytosis

Very large macromolecules (Milk, mucus)

[⬆]

High concentration

[⬇]

Low concentration