The Most Important Moment

Lynn Margulis' Theory on the origin of Mitochondria and Chloroplasts has more and more evidence, and while the path from single-celled organisms to multi-celled ones happened many times in our past, the transition from Bacteria to organelle bearing Eukaryotic cells only happened once. It's Okay to be Smart explores this single great moment.

Here are your Microscope Notes to take to prepare for using them later this week.