Rachel
About
Khan Academy on a Stick
Nuclei, membranes, ribosomes, eukaryotes and prokaryotes
Cells
Diffusion and osmosis
Nuclei, membranes, ribosomes, eukaryotes and prokaryotes
Endoplasmic reticulum and Golgi bodies
Organelle overview
Chromosomes, chromatids, chromatin, etc.
Your browser does not support Flash or HTML5 video. You can:
upgrade your browser
install Flash
try this direct link
If the above player doesn't work,
try this direct link
.