13:58

Transport Across Cell Membranes

12:27

Photosynthesis

19:10

A célula e suas organelas

27:36

The Cell Membrane

16:04

Mendelian Genetics

11:48

'My jaw is dropped': Canadian official's interview stuns Amanpour

27:15

O Conceito Mais Mal Compreendido da Física

10:59

The cell membrane (plasma membrane structure, function and components)